Front. Psychol. Frontiers in Psychology Front. Psychol. 1664-1078 Frontiers Media S.A. 10.3389/fpsyg.2018.00835 Psychology Original Research Modeling Child–Nature Interaction in a Nature Preschool: A Proof of Concept Kahn Peter H. Jr. 1 2 * Weiss Thea 2 Harrington Kit 3 1Department of Psychology, School of Environmental and Forest Sciences, University of Washington, Seattle, WA, United States 2Department of Psychology, University of Washington, Seattle, WA, United States 3Fiddleheads Forest School, University of Washington Botanic Gardens, Seattle, WA, United States

Edited by: Catherine Jordan, University of Minnesota, United States

Reviewed by: Deborah Joy Moore, Deakin University, Australia; M. Teresa Anguera, Universitat de Barcelona, Spain

*Correspondence: Peter H. Kahn Jr., pkahn@uw.edu

This article was submitted to Educational Psychology, a section of the journal Frontiers in Psychology

29 05 2018 2018 9 835 29 01 2018 09 05 2018 Copyright © 2018 Kahn, Weiss and Harrington. 2018 Kahn, Weiss and Harrington

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

This article provides a proof of concept for an approach to modeling child–nature interaction based on the idea of interaction patterns: characterizations of essential features of interaction between humans and nature, specified abstractly enough such that countless different instantiations of each one can occur – in more domestic or wild forms – given different types of nature, people, and purposes. The model draws from constructivist psychology, ecological psychology, and evolutionary psychology, and is grounded in observational data collected through a time-sampling methodology at a nature preschool. Through using a nature language that emphasizes ontogenetic and phylogenetic significance, seven keystone interaction patterns are described for this nature preschool: using one’s body vigorously in nature, striking wood on wood, constructing shelter, being in solitude in nature, lying on earth, cohabiting with a wild animal, and being outside in weather. These 7 interactions patterns are then brought together with 13 other patterns published elsewhere to provide a total of 20 keystone interaction patterns that begin to fill out the model, and to show its promise. Discussion focuses on what the model aims to be in terms of both product and process, on what work the model can currently do, and how to further develop the model.

nature preschools interaction interaction patterns modeling wild nature proof of concept nature language environmental education

香京julia种子在线播放

    1. <form id=HxFbUHhlv><nobr id=HxFbUHhlv></nobr></form>
      <address id=HxFbUHhlv><nobr id=HxFbUHhlv><nobr id=HxFbUHhlv></nobr></nobr></address>

      Introduction

      Nature preschools and forest kindergartens have been increasing in number: from around 25 programs in 2012 to more than 250 in 2017 in the United States alone (North American Association for Environmental Education [NAAEE], 2017). Thus questions in research communities have emerged about these programs, such as how they compare to indoor classrooms on traditional metrics of language development, physical development, executive function, and academic preparation for K-5 schooling. While these questions are important, in our view a complementary line of research is also needed, one that is perhaps even more foundational: to characterize what exactly goes on in nature schools, especially in terms of how children interact with nature. After all, nature is the central environmental feature of nature schools.

      To date, many such characterizations have focused on different forms of children’s play in nature (Ginsburg, 2007; Brown and Kaye, 2017; Morrissey et al., 2017). For example, Sobel (2008) postulated the existence of seven universal play motifs: going on adventures, descending into fantasies, shaping small worlds, developing friendships with animals, following paths and figuring out shortcuts, making forts and special places, and playing hunting and gathering games. This is valuable work, and it follows a growing awareness, with roots to Vygotsky (1978), that children’s play in nature is not only diverse, but that it provides the mechanism for many important developmental outcomes.

      That said, we believe there is much to be gained by expanding our understanding of children’s engagement with the natural world beyond the scope of play. After all, there are many types of interactions, such as when a child splashes water on her face from a creek to cool down on a hot summer’s day, or retreats to a solitary spot in nature and sits under a tree to regain composure after a conflict, which do not seem well characterized in terms of a play motif.

      Thus in this article we bring forward an approach to modeling child–nature interaction – based on the idea of interaction patterns. We first provide a psychological basis for our model, drawing on psychological constructivism with roots to Jean Piaget, ecological psychology with roots to James Gibson, and evolutionary psychology with roots to E. O. Wilson. Next we discuss what interaction patterns are, how they can be enacted along a continuum from wild to domestic, and the idea of keystone interaction patterns. From there we specify the form of scientific model that we are proposing. Then we move into the empirical part of this article as we seek to provide a proof of concept for modeling child–nature interaction. We do so by analyzing observational data that we have collected in a nature-based preschool, and provide an account (what we call a nature language) of 7 keystone interaction patterns at this preschool. We then synthesize our keystone interaction patterns with 13 other such patterns (recently published elsewhere) to show that child–nature interaction can be successfully modeled in this way, leading to characterizations with prima facie validity and testable hypotheses for future experimental research.

      To be clear, in this current research we do not test a hypothesis. Rather, we offer a proof of concept based on qualitative analysis of original empirical observational data. Thus stylistically we do not have the traditional “methods/results” sections in this article, but sections that we believe provide an effective exposition of our proof of concept.

      The Psychological Grounding for Interaction Patterns

      Our model is based on the idea of interaction patterns. Before discussing interaction patterns, it is useful to delineate briefly the psychological grounding for them, which is based on constructivist psychology, ecological psychology, and evolutionary psychology.

      Constructivist Psychology

      A large body of evidence shows that the child’s developing conceptual knowledge of the physical and logical world is neither simply a product of innate biological programming (endogenous theories) nor simply a product of cultural learning (exogenous theories); rather it requires the child constructing the knowledge for herself through repeated interactions with the physical and social entities of the world (Piaget, 1952/1963; Langer, 1969; Piaget, 1983; Turiel, 1983).

      According to Piaget (1983), the mechanism for the construction of knowledge involves the coordination of two complementary cognitive processes: of assimilation and accommodation. Assimilation is the process that seeks to fit new information into existing cognitive schemas, perceptions, and understandings, while accommodation is the process that adjusts, reorients, and revises those schemas, perceptions, and understandings to account for aspects of the new information that is not readily assimilated. This process is motivated by what is called the mechanism of disequilibration (Kohlberg, 1969, 1971; Piaget, 1983). In other words, through interaction with the environment the child comes to recognize – in daily minor and sometimes major ways – that her current understandings of the world are not able to take into account her previous understandings, and she becomes unsettled. The disequilibrated state is not a comfortable state. Thus the child seeks to construct a more adequate and conceptually sophisticated understanding that solves the problems at hand.

      Ecological Psychology

      Along complementary lines, in the theory of ecological psychology, Gibson (1979/1986) postulated that the world is perceived by the individual not only in terms of shapes, spatial relationships, and logical properties, but also in terms of possibilities for action. Gibson proposed that it is our direct perception of information specifying the environment in relation to ourselves – the affordances of the environment – that guides our understanding of our surroundings. Affordances are dependent on a reciprocal relationship between the environment and the being interacting with it (Turvey, 1992; Stoffregen, 2003). For example, for an active young child a sapling tree’s thin, close limbs might afford climbing, but that would not be the case for an infant who is unable to climb or for an adult who might break the branches. Thus affordances can guide and constrain action (Harrington, 2008, unpublished). According to Gibson (1979/1986, p. 143), “the possibilities of an environment and the way of life of an animal go together inseparably.”

      One of the issues discussed within the field of ecological psychology is whether an affordance exists as a property of the environment or as a property of the animal-environment system (Turvey, 1992; Stoffregen, 2003). In our view, the theory-driven answer can be different from the pragmatic answer. In theory, an affordance is a property of the animal-environment system. After all, the exact same physical attribute in the environment will often provide an affordance to one type of person but not another. But having said that, we think it is often pragmatically useful to hold a specific category of person as a constant – for example, to hold constant the referent of a child – and then to talk about affordances of the landscape itself, as we did for the sapling tree with thin branches. Both perspectives have merit. We will come back to these ideas later.

      Evolutionary Psychology

      Decades ago, Wilson (1984) coined the term biophilia to refer the genetic predisposition that humans have to affiliate with biological life. The mechanism for this nature affiliation is, according to Wilson (1993), that “a certain genotype makes a behavioral response more likely, the response enhances survival and reproductive fitness, the genotype consequently spreads through the population, and the behavioral response grows more frequent (p. 33). In other words, genes that lead to behaviors that enhance survival tend to reproduce themselves (since they are in bodies that procreate more rather than less), and thus these genes and correlative behaviors grow more frequent. For empirical support (see Kahn, 1999, 2011 for summaries), studies have shown that even minimal connection with nature – such as looking at it through a window – can increase productivity and health in the work place, promote healing of patients in hospitals, and reduce the frequency of sickness in prisons. Other studies have shown that when given the option humans choose landscapes that fit patterns laid down deep in human history on the savannas of East Africa. Direct contact with animals has been shown to greatly benefit a wide range of clinical patients: from adults with Alzheimer’s disease to autistic children.

      In terms of its theory and empirical support, biophilia has in recent times largely merged with and provided further momentum to the field of evolutionary psychology, which seeks to show that the properties of human social life are the result of evolved adaptations, and thus deeply rooted in our ancestral heritage (Barkow et al., 1992). This theory does not propose that such properties are immutable, or that they are not substantively shaped by culture. But it does mean that to understand the origins and significance of properties of human social life one needs to go back tens of thousands years in our evolutionary history, and sometimes longer.

      In this article, as we articulate our model of child–nature interaction patterns, we will be seeking to show that the patterns are ontogenetically and phylogenetically significant. For ontogenesis, we draw on constructivist psychology and ecological psychology to speak about developmental mechanisms, and direct potential outcomes and developmental endpoints that promote human health, mental wellbeing, and human flourishing. For phylogenesis, we draw on evolutionary psychology to show that some of the patterns gain particular meaning because they go far back in our evolutionary heritage, and sustain us still.

      Interaction Patterns

      Think about an interaction in nature that you have had that was meaningful. Now characterize it in such a way that you could imagine many such examples of it happening, and even though each example would be at least a little different from the others you would not have a problem recognizing each one as essentially the same form of interaction. If possible, in describing your interaction, include a verb of what you are doing and a noun for the nature that you are doing it with. At that point you probably have an interaction pattern. For example, you have likely enjoyed watching the sun set many times in your life. Each time is at least a little different: the weather and colors are never identical; one time you might be on flat land watching the sun set over the hills in the distance, and another time you might be watching the sun set over the ocean (Figure 1). But no matter the differences, you know it when it’s happening. You can say, “yes, I’m watching the sun set now.” That’s the idea of a “pattern” – not in the sense of a cookie-cutter pattern where each form (cookie) is identical, but that of a unified underlying structure of human–nature that can be enacted in an endless number of unique ways. In brief, interaction patterns refer to characterizations of essential features of interaction between humans and nature, specified abstractly enough such that countless different embodied versions of each one can be uniquely realized given different types of nature, people, and purposes. To date, Kahn and his colleagues have generated over 150 human–nature interaction patterns, with photos and descriptions for many of them (Kahn et al., 2010, 2012, 2018a,b; Kahn and Weiss, 2017).

      Interaction pattern: watching the sun set.

      Our pattern work draws on the work of Christopher Alexander and his colleagues (Alexander et al., 1977; Alexander, 1979) who generated 253 patterns in the built environment that they believe engender meaningful human living. According to Alexander, a “pattern describes a problem which occurs over and over again in our environment, and then describes the core of the solution to that problem, in such a way that you can use this solution a million times over, without ever doing it the same way twice” (p. 10). For example, one of their patterns is titled “Light on two sides of every room.” They write: “The importance of this pattern lies partly in the social atmosphere it creates in the room” (Alexander et al., 1977, p. 748). There is now a body of work that has extended Alexander’s idea of patterns into the fields of ubiquitous computing (Chung et al., 2004), software engineering (Gamma et al., 1995; Gabriel, 1996), interaction design (Borchers, 2001), human–computer usability (Graham, 2003), and human–robot interaction (Kahn et al., 2008).

      Granted, there are other ways that researchers have used the idea of patterns, often with a more experimental or at least quantitative focus, often involving sequential analysis and observational methods across different populations, including infants, married couples, and non-human primates (Sackett, 1978; Bakeman and Gottman, 1987; Magnusson, 2000). But what we offer here is more along the lines of Alexander in terms of the robust qualitative nature of the patterns. We emphasize this point so as to establish that there are different ways that fields have conceptualized and used the idea of patterns, and explored interaction, and that one way does not preclude another.

      The Continuum of Interaction Patterns: Wild to Domestic

      Wildness refers to that which is untamed, unmanaged, not encompassed, self-organizing, and unencumbered and unmediated by technological artifice (Shepard, 1982, 1998; Rolston, 1989; Foreman, 1991; Kahn and Hasbach, 2013a,b). We can love the wild. We can fear it. We are strengthened and nurtured by it (Rolston, 1989; Turner, 1996).

      One important feature of interaction patterns is that not only can they be instantiated (enacted) in endlessly unique ways, but those instantiations are themselves usually along the continuum of wild to domestic forms of human–nature interaction. For example, there is the interaction pattern of movement away from human settlement, and the return. In Paleolithic times, hunters would leave nomadic campsites and go out in search of animals, and gatherers would leave in search of roots, tubers, nuts, berries, and other plant life. The further out they went, the more they left the safety of the larger group. Both hunters and gatherers would then return, hopefully (but not always) with their bounty, looking forward to the re-union with their group, and greater safety. When a person now hikes for an afternoon into the mountains, it is a less wild form of this interaction pattern; and more domestic still when a person hikes for 20 min out on a park trail.

      Granted, wildness is a contested construct. One line of scholarship, for example, has shown how wilderness is largely a cultural construction (Cronon, 1995). From this perspective, it is not the case, for example, that when Europeans began to inhabit North America that they encountered a pristine, untouched wilderness. Rather, the land was an inhabited landscape by Native Americans, and a partly managed landscape at that. Or the Wilderness Act of 1964 in the United States created a legal definition of wilderness, and then partitioned off 9.1 million acres of federal land that was then called “wilderness.” This scholarship has merit; but our position is that there is a good deal of difference between the idea of wilderness and wildness. Wildness, as defined above, has properties – such as an entity or agent being untamed, unmanaged, not encompassed, and self-organizing – that may often be found in designated wilderness areas, but is not synonymous with it. For example, all, a weed growing up through a crack in urban concrete in Tokyo has an aspect of wildness about it that is not embodied in a bonsai plant that may be right next to it. Thus in our view, our focus on wildness (as opposed to wilderness) is not so vulnerable to cultural critiques of this literature.

      Keystone Interaction Patterns

      There is no limit to the unique ways that human language can be spoken. It is endless, infinite. That said, much of what we say uses common words, and even phrases: “See you there.” “It’s good to meet you.” “I’ll text you when I leave.” “I’m happy for you.” “I love you.” “What’s the weather tomorrow?” “Let me check.” Some of these phrases can be understood as particularly important not only because they are common but because they play important roles in facilitating human–human interaction. For example, the common phrase “Hello, how are you?” initiates an introduction between two people, and demonstrates an initial (if perfunctory) concern of the person initiating the contact.

      Interaction patterns have a somewhat similar structure. On the one hand, there is no limit to the number of interaction patterns that can be characterized. In part, this is because interaction patterns can be characterized into smaller and more discrete forms. For example, there is the interaction pattern of walking into a body of water. You can walk into an ocean, walk into a lake, walk into a river, and walk into a swimming pool. If you’re walking into the ocean, you can walk in over one’s ankles, walk in over one’s knees, walk in over one’s waist, walk in over one’s chest, or walk in over one’s head. For most people, each of these interaction patterns lead to different experiences of the human body in the water. So for most people, it can be useful to use language to make these distinctions. But anybody can say “well, for me, I notice a distinction between getting my toes wet and then wading above my ankles.” Many of us would say, “oh, yes, that makes sense to me, too.” We could call that interaction pattern, getting toes wet in the ocean. But at some point the distinctions may get idiosyncratic to a particular person. If someone says “I notice a distinction in going into the ocean just at my knee cap and 1/10th of an inch above my kneecap,” it seems likely that most of us do not experience that distinction as important. But if someone thinks the interaction pattern is important to them, then that’s fine. It is not an issue of right or wrong.

      On the other hand, some interaction patterns play more important roles than others, and that can depend on the people involved and their sensibilities, vulnerabilities, and goals; and the nature involved at a specific time. For example, if you are supervising young children who are playing at the seashore, and the waves are breaking at around a height of two feet, you might tell the children “don’t get into the water higher than your knees unless I’m with you!” The key distinction you are making is getting into ocean at knee-level, for that is what you believe is the safety spot for these children with their capabilities with these specific waves. Or let us say you are designing a city that seeks to develop an urban region with a lake within it. You might well argue that a particularly important interaction pattern is walking along the edges of water and land, or casting it more narrowly for this specific context: walking around the edge of a lake. This might well be the critical interaction pattern that you need to design for, which means keeping houses and development away from the edge of the lake itself, and creating a pathway around the lake, so that people can walk around the lake. Knowing that this interaction pattern is a particularly important one helps to provide the language for urban design and urban sustainability (Hartig and Kahn, 2016; Kahn et al., 2018b). Such interaction patterns have been referred to as keystone interaction patterns.

      A keystone interaction pattern is any interaction pattern that plays a disproportionately large role in human–nature interaction because (a) it occurs frequently, (b) it is itself hugely beneficial or meaningful, (c) it engenders dozens or even hundreds of complementary, subsidiary, or overlapping interaction patterns, and/or (d) its loss leads to the subsequent loss of dozens or even hundreds of complementary, subsidiary, or overlapping interaction patterns (cf. Kahn et al., 2018b). This use of the term keystone partly mimics the term keystone species in conservation biology, which refers to a species (such as a top predator) that has a disproportionate benefit to its environment relative to its abundance (Mills et al., 1993; Paine, 1995). For example, if the wolf (a keystone species) is removed from such areas as Yellowstone National Park, then elk grow more abundant and stationary, overgrazing vegetation, which leads to the loss of habit, increased erosion, and the loss of biodiversity (Eisenberg, 2013).

      On occasion, it is possible that several interaction patterns are themselves combined and then elevated to the level of a keystone interaction pattern, or that some other aspect of the interaction is important enough to append to the core verb/noun structure of a keystone interaction pattern. An analogy can be made to the naming of different types of soup. Some soups are named by their main ingredient, or at least for their distinctive taste. There is, for example, potato soup, lentil soup, chicken soup, carrot soup, leek soup, split pea soup, and miso soup. But sometimes a soup is named based on two of its ingredients. For example, chicken noodle soup usually has many ingredients other than chicken and noodles (e.g., carrots, celery, onion, garlic, and olive oil), but it is not called “chicken celery soup” or “chicken garlic soup” but chicken noodle soup because the chicken and noodles structure its main flavor and the experience of eating the soup. Something similar can occur with interaction patterns. This point will become clear when we discuss the interaction pattern lying on earth in solitude.

      A Nature Language for Interaction Patterns

      Interaction patterns can be thought of as a little bit like words in a dictionary. Words can be defined as individual entities, but they exist in our lives mostly in relation to one another, just as you are reading the words on this page. Similarly, interaction patterns can be defined as individual entities, but are experienced with many other interaction patterns in often overlapping and sequential ways with semantic coherence. For example, you can be walking a trail and stepping over a log while seeking to get to a desired bluff top spot so that you can then look out to the snow-capped mountains, and while you do so you might be enjoying the sun shining on your skin, feeling a light wind, and decide to pick some wild blueberries and then while you’re kneeling on the ground you might catch a quick look and watch a Cooper’s hawk chase down a quail, as you swat a mosquito that has landed on your arm. Human interaction with nature is endlessly varied, endlessly deep. In such ways, interactions can be combined in human discourse, and help form a nature language — a way of speaking about patterns of interactions between humans and nature, their wide range of instantiations, and the deeply meaningful and often joyful feelings that they engender (Kahn et al., 2012).

      But there is another and perhaps more substantive way that a nature language can be used. It is to use language to speak about any specific interaction pattern, especially about a keystone interaction pattern, in order to help others understand how the interaction can be enacted, and what it feels like to experience.

      This is important because in current times the natural world is getting destroyed quickly, across generations; and as we lose nature, we lose the knowledge of how to interact with nature and how wonderful it feels to do so; in turn, that loss leads to our loss of language of how to speak about interacting with nature. The anthropologist Davis (2007) writes that when indigenous cultures lose their language their indigenous way of life dies; that language needs to be spoken, it needs to be “lived” in order for a culture to survive. Similarly, we need to help revive a diverse and deep nature language if we are to help reverse the course of environmental destruction. Thus it is important not only to characterize interaction patterns, but to provide a rich narrative for many of them, especially keystone interaction patterns. Such narratives can draw from personal experiences, accounts of indigenous peoples, the historical record, nature writing, evolutionary psychology, and empirical studies. Each narrative helps to make interaction patterns “alive” through words so as to help others know what is possible. For this reason, when we – in the latter part of this article – characterize 7 keystone interaction patterns in a nature preschool, we will be using a nature language to help articulate the patterns themselves.

      Modeling Child–Nature Interaction Through Interaction Patterns

      In its basic sense, a model is a simplified description of the information of a phenomenon in the world with the objective of making the phenomenon understandable. There are many types of models, including “probing models, phenomenological models, computational models, developmental models, explanatory models…theoretical models, scale models, heuristic models, caricature models, didactic models…mathematical models…formal models, analog models and instrumental models” (Frigg and Hartmann, 2012).

      In our work here, we are seeking to model human–nature interaction through the heuristic of interaction patterns. Interaction patterns represent a simplification of the world with the goal to make the world more understandable. Our model incorporates attributes of what is called a phenomenological model insofar as it seeks to represent observable properties of their targets, while incorporating principles and laws associated with scientific theories (Frigg and Hartmann, 2012). In our case, our model incorporates principles, as discussed earlier, from theories of constructivist psychology, ecological psychology, and evolutionary psychology.

      Validation of the model occurs in several complementary ways. Given its phenomenological stance, there is face validity based on one’s own direct experience. One can ask, “does this interaction pattern make sense to me based on my own experience in nature?” If it doesn’t, then while it could still be an interaction pattern, it may not be an important interaction pattern. Then there is the question: “Is the interaction pattern within the realm of human possibility?” For example, there is the possible interaction pattern which has an appropriate linguistic structure of a relevant verb and nature noun, stepping over an ocean, which is just not physically possible. Thus stepping over an ocean is not a valid interaction pattern. Validation of interaction patterns is further established the more parsimoniously they correspond with the theories of constructivist psychology, ecological psychology, and evolutionary psychology. In addition, the idea of keystone interaction patterns involves an empirical claim that they occur frequently in a specified population and/or are particularly important and meaningful to that population, and/or engender dozens or even hundreds of complementary, subsidiary, or overlapping interaction patterns, and/or if lost leads to the subsequent loss of dozens or even hundreds of complementary, subsidiary, or overlapping interaction patterns. These are empirical claims that can be used to test the validity of a keystone interaction pattern. Finally, part of the validity of our model lies in whether it can lead to testable hypotheses – not for the model itself (as in a climate change model), but in terms of leading to predictions of the world using the interaction patterns.

      In what follows, we seek to provide a proof of concept that human–nature interaction can be modeled using the heuristic of interaction patterns, supported with a nature language. This is a beginning venture, not an end. We focus on what seem to us keystone interaction patterns, and begin to validate our model based on the above epistemological criteria.

      The Proof of Concept

      Over a period of 7 months, we have been filming children interacting with nature in a nature preschool in Seattle, WA, United States. The school is Fiddleheads Forest School, at the University of Washington Botanic Gardens, directed by one of us (Harrington). The children (ages 3–5 years old) and teachers spend all of their time outside, in a matrix of trees, in one of two classrooms located in the University of Washington Botanic Gardens. These botanic gardens are open to the public in this fast-growing city. We divided each of the two outdoor areas into five different filming zones, and through a randomized time-sampling methodology are filming children. Our analysis is based almost entirely on the observed digital video footage; though our videos did capture diffuse sound, and so occasionally we had faint child language to work with, too, in interpreting the behavior. One of the strengths of this method is that it is minimally intrusive in the children’s interactions with nature, and is highly systematic in randomly covering all of the landscape. One of the limitations is that we did not interview the children about how they themselves understood their interactions (Turiel, 1983; Kahn, 1999), which itself could become a future study.

      As a step forward in characterizing child–nature interaction in a nature preschool, we offer here seven keystone interaction patterns that have been emerging from our data.

      This study was carried out in accordance with and with the approval of the Institutional Review Board at the University of Washington, the Human Subjects Division. The parents of all the child participants gave written informed consent in accordance with the Declaration of Helsinki. For those parents who did not give permission for their child to participate, we then explicitly kept them out of all of our video footage, either by zooming in on only the children for whom we had permission (in our time-sampling methodology), or if that was not possible given their close proximity to other children we were filming, we stopped filming all of the children for that duration. Occasionally a parent gave permission for their child to participate but if the child’s image was to be used in a publication, such as this one, they requested the child’s face be blurred, which we did.

      Using One’s Body Vigorously in Nature

      In the United States, about 75% of children ages 5–10 do not get enough exercise (Hendrick, 2011), which increases to over 90% for adolescents (Li et al., 2016). Exercise strengthens the heart, lungs, and bones, decreases the likelihood of developing obesity, decreases the risk factors for diseases like type 2 diabetes and heart disease, can reduce anxiety and depression, and promotes positive mental health (Youth Physical Activity, 2009).

      From an evolutionary perspective, such outcomes are not at all surprising (Wilson, 1984; Kellert and Wilson, 1993; Kahn, 1999, 2011). For tens and hundreds of thousands of years, we as a species came of age using our bodies vigorously in nature. That was a requirement for survival. For example, in her ethnography based on living with Ju/Wa bushmen in the Kalahari desert in the early 1950’s – at a time when their way of life may well have embodied much of the hunter-gatherer life from 50,000 years earlier – Thomas (2006) documents that the Ju/Wa women she went foraging with would sometimes carry home 50–80 pounds of tubers, roots, and nuts. The Ju/Wa women themselves weighed about ninety pounds. Thomas estimates that these women walked about 1,500 miles a year. Hunting, too, was physically strenuous. One method of hunting a bull eland was especially demanding. The mature bull eland, in particular, with large amounts of body mass, could be overcome on especially scorching days by a runner who kept at him mile after mile. The runner could not match the eland for speed, for the eland sprints at 35 miles an hour. But eventually, after many hours of being chased in the heat, the eland overheats and can run no more. “Then the hunter, with the last of his strength, can catch up and grab him by the tail, then kill him with a spear if he brought one, or he can push the eland over and lie on his neck to keep him from struggling and clamp his hands over the eland’s nose and mouth to stop his laboring breath” (Thomas, 2006, p. 32). Thus from this evolutionary perspective, our bodies and minds are optimally programmed to thrive through using our bodies vigorously in nature, which as modern people we have now reduced to what we call “exercise.”

      Because using one’s body vigorously in nature can be instantiated in so many different ways, and plays such a critical role in human health and wellbeing, it is a good keystone interaction pattern to start with here. The ways this interaction pattern is enacted in Fiddleheads are not so surprising. For example, Figure 2 shows children running on uneven ground, kicking at a wheelbarrow, lifting a stump, and hitting a tree with a heavy branch.

      Interaction pattern: using one’s body vigorously in nature. Signed informed consent was obtained from the parents of all the children as shown in the photos in this manuscript.

      Our point here is not to describe all of the ways that these children use their bodies vigorously in their nature preschool (though that is a worthwhile future goal), but to provide the keystone interaction pattern by which anyone can then begin to characterize subsidiary interaction patterns whenever they see it occur with children. For example, if you see children dancing on the ground or swinging on a tree limb, tumbling down a hill, running up a hill, chasing butterflies, or moving heavy rocks – you can say “ha, within a very broad framing of child–nature interaction, there’s something common and important to all of it: they are using their bodies vigorously in nature.

      With this keystone interaction pattern in hand, one can then generate important hypotheses. For example, it is possible that children in a nature preschool are more “active” than children in a traditional preschool with inside classrooms. However, such differences in children’s activity may or may not show up if it is measured by a pedometer for steps walked. Rather, a more specific hypothesis is that children in a nature preschool use their bodies more vigorously than in a traditional preschool as measured by the total number and duration of engagement of the subsidiary interactions patterns of this keystone interaction pattern.

      Striking Wood on Wood

      The previous keystone interaction pattern – using one’s bodies vigorously in nature – is framed at a very broad level in the sense that it hierarchically encompasses at least hundreds of more specific forms of interactions that themselves constitute interaction patterns. We mentioned a few above: running up a hill, chasing butterflies, and moving heavy rocks. Given a specific population, landscape, situation one is trying to model, and audience that one is speaking to, a subset of a keystone interaction pattern can also constitute a keystone interaction pattern. We think that is the case for striking wood on wood. It is shown being enacted at the bottom of Figure 2 where a girl with a club-like piece of wood is in the process of using it to strike the trunk of the large tree.

      As a more complex instantiation of this interaction pattern, consider an event we observed where a boy (Figure 3) jumps off of a stump and with a stick in hand slams his stick repeatedly into the wood structure. In turn, a girl (also in Figure 3) initially watches him, and then decides to try out something similar. She picks up a stick and starts striking it, with increasing vigor, against other wood. If you were watching this video data, you would see how the initial affordance of striking wood on wood appears to lead the girl to new perceptions of affordances, such that she understands that she can strike harder. Our impression is that she is not so much trying to destroy something but trying to figure out the properties of striking wood on wood: how to strike, and how increased force leads to different outcomes. Sometimes when children enacted this interaction pattern, they struck with a light branch, heavy branch, or club-like branch. Sometimes they extended this interaction pattern beyond wood on wood, and struck with a tool, such as with a garden hoe or shovel. Sometimes what was being struck was a live tree, live branches, logs, stumps, or the ground.

      Interaction pattern: striking wood on wood.

      Why do children enact this interaction pattern in play? Perhaps it is because that this form of interaction lies deep within our evolutionary history. It is primal. It is the woman gatherer 50,000 years ago, kneeling on the African desert sands, using a hefty digging stick to dig 10 or even 18 inches deep for tubers, striking the earth again and again (Thomas, 2006) for survival. It is the hunter striking an animal’s body with a spear, seeking to pierce the animal’s heart (Marshall, 2002). It is the woodsman chopping wood, and striking the wood round again and again, to split it, so as to have the pieces by which to build and sustain a fire. What we are likely seeing enacted here, then, are the ontogenetic origins from our phylogenetic past.

      Constructing Shelter

      This interaction pattern also goes far back in our evolutionary heritage. As humans, we have constructed shelter for perhaps as long as we have been a species. During Paleolithic times, the constructions would have modified natural affordances of the landscapes, such as caves; or used materials in hand, and led, for example, to light thatched huts on the savannahs of Africa, easily constructed and easily left behind in nomadic hunter-gather life (Thomas, 2006).

      This form of children’s interaction overlaps with what is referred to in the literature as place-making (Sobel, 1993; Nabhan and Trimble, 1994; Chawla, 2002; Sampson, 2012, 2015). For example, in Figure 4, the child is modifying the hollow of a tree by leaning branches up outside the hollow, thereby creating a little more protection and privacy. Then he engages in another interaction pattern: leaning against tree, and thereby finds respite.

      Interaction pattern: constructing shelter.

      Being in Solitude in Nature

      In Milton’s (1674/1978) epic poem Paradise Lost, he writes “For solitude sometimes is best society, /And short retirement urges sweet return” (book IX). He was writing of Adam going off alone for a while in the Garden of Eden. Others emphasize that being in solitude in nature leads to deep experience. Muir (1976, p. 314) put it this way: “Only by going alone in silence, without baggage, can one truly get into the heart of the wilderness. All other travel is mere dust and hotels and baggage and chatter.” Of course solitude is relative to person and place. For Muir it might mean hiking a week in the Sierras without meeting another person; for a child it might mean spending a few minutes alone next to a favorite tree.

      The girl in Figure 5 had just been involved in an altercation, and went into this enclosed tree area. One of us (Weiss) was already filming in this general area and continued filming. The girl noticed the researcher, and could not seem to find the peace she needed. She fidgeted, for example, with various sticks and leaves in her hand. After several minutes, she got up and approached the researcher and politely asked if the filming could stop so as to give her some alone time. She then went back to her spot and sat by the large tree. The researcher stopped filming and moved a little ways away. Children at Fiddleheads often take advantage of the privacy that more wild or secluded parts of the landscape affords. As in this instance, it sometimes appears to be an effective mechanism for self-regulating and regrouping: processing something difficult that had just occurred with other people. Other times the solitude seems to afford some of what Muir was writing about: it allows children to get more into the heart of nature itself, as when a girl at Fiddleheads went alone into a more wild part of the landscape and stood still for a bit and then started to enact the interaction pattern calling the birds.

      Interaction pattern: being in solitude in nature.

      Lying on Earth

      Modern people are losing direct physical contact with the earth. That loss is likely due to ignorance and happenstance. Ignorance in that we have forgotten how good it feels to have one’s body in contact with the earth. Happenstance in that the urban world is increasingly paved such that there is little ability to lie on earth; and even when there is opportunity, we often design nature areas to prevent this interaction pattern under the guise of comfort. For example, it is likely that many times you have arrived at a beautiful resting spot in a park or nature preserve, perhaps alongside a creek, or on a bluff top overlooking a beautiful view, and there is a bench there for you to sit on. So you sit on it. That is an affordance of the bench. But in doing so you have passed over the affordance of the earth itself. It is an enjoyable feeling to place one’s body in contact with the earth. You feel its contours, its heat or cold. Perhaps you place your hands in the earth. Or on a hot summer’s day, perhaps you take your shoes off and place your feet into the soil. There is emerging scientific literature that shows the cognitive and health benefits of skin in contact with soil. For example, a strain of bacterium found in soil, mycobacterium vaccae, appears to improve cognitive functioning, and triggers the release of serotonin, which in turn elevates mood and reduces anxiety (Lowry et al., 2007). There is also emerging thought that contact with the ground helps to balance the body’s electrobiochemical system (Adams, 2012). For example, Chevalier (2014) writes:

      The body is a highly intelligent electrobiochemical system that is strongly influenced by its internal electrical environment. Countless electrical charges within this system regulate countless biochemical reactions, including enzymatic transformations, protein formation, and pH (acid/alkaline) balance. In this complex arrangement, the Earth’s surface electric potential serves as the body’s stabilizing reference point or ground…[direct] contact with the surface of the Earth maintains the body’s electrical stability and normal functioning of its self-regulating and self-healing mechanisms. (p. 255)

      Both girls in Figure 6 are enacting this interaction pattern of lying on earth. In addition, the girl in the first photo is enacting what could be called a combinatorial keystone interaction pattern insofar as she is also being in solitude in nature. Specifically, this girl had just had an altercation with another child and, in our interpretation, she wanted to regroup. She walked to this area and seemed a little agitated, and then wandered around a little, almost as if she was trying to find the right spot where she felt most comfortable to lie down. And then she did. And then it is as if the earth helped ground her emotionally. This form of interaction – lying on ground in solitude – could itself be elevated to a keystone pattern because it seems to us especially powerful as a form of communion with nature.

      Interaction pattern: lying on earth.

      Cohabiting With a Wild Animal

      It has been said that one of the overarching problems of the world today is that we see ourselves as dominating over nature, rather than cohabitating, coexisting, and affiliating with it (Kahn, 2009, 2011; Kahn and Hasbach, 2013a,b). Perhaps the basis for cohabitating grew out of necessity in Paleolithic times. For example, Thomas (2006) recounts an experience one evening when she was living with the Bushmen of the Kalahari desert in the early 1950’s when four lions walked into the Bushmen camp. The Bushmen had no way of killing a lion. One of the men took a flaming branch from the fire and in a firm tone, without ever taking his eyes off the lions, talked to the lions, and then ended by telling the lions respectfully but firmly that they could not be here, and to go! The lions watched the person, and “then gracefully they turned and vanished into the night” (p. 151). Of course, for the most part the lions were not interested in eating or harming people; lions and humans coevolved together for hundreds of thousands of years in that landscape. There was enough space for both of their species to live and to thrive. As our species then evolved, and we gained the ability to control, use, and destroy more and more of our environment, and created the technological tools to do so faster, and populated faster, our wellbeing if not our very existence on the planet now comes under threat. One solution is to rediscover how to cohabit with the wild (Kahn and Hasbach, 2013a,b). It becomes a necessity again, no longer because of our limited ability to control nature but because of our seeming inability to control ourselves.

      A subset of the interaction pattern cohabiting with the wild that we think speaks powerfully to what occurs at Fiddleheads Forest School is cohabitating with a wild animal. They are not wild animals like lions, obviously. But the animals such as birds, spiders, and worms are wild insofar they are autonomous, self-regulating, and not depending on the care of humans to live.

      Here is an illustrative case in point of this interaction pattern. A few children were digging and moving earth in a wheelbarrow when the girl in Figure 7 noticed a worm in the soil. The boy had come close to running it over as he was moving quickly with the wheelbarrow in hand. The girl initially displayed aversion to the worm, but that soon changed to fascination. A teacher noticed what was going on and then kneeled down and picked up the worm, placed it in her palm, and showed it first to the girl, who began to get comfortable being in the presence of the worm. The boy saw what was happening and, in our interpretation, wanted to get on with his construction without harming the worm, so he walked over and without hesitation took the worm out of the teacher’s hand and placed the worm some feet away, out of the construction area. He then got back to work. Both children were cohabitating with this animal: the girl by being in its company, and learning to appreciate and take delight in it; the boy by being able to find a way to continue with his life while allowing the animal the space to continue with its life. Notice, too, how the teacher was able to foster this interaction by bringing the animal to the attention of the children, demonstrating that the animal was not harmful (by having it in the palm of her hand), and then giving children the space to figure out what would happen next.

      Interaction pattern: cohabiting with a wild animal.

      Being Outside in Weather

      Some interaction patterns are so pervasive that they can escape notice, even if they are important for humans to enact. Breathing air is an example. We hardly think of it as a form of interaction – that is, until it becomes hard to breathe. Then we might emphasize the adjective clean as in breathing clean air. There are cities in this world where breathing polluted air has equivalent health impacts of inhaling 2–5 dozen packs of cigarettes a day.

      One such pervasive interaction pattern, and a defining characteristic of nature schools in general, is being outside in weather. The children at Fiddleheads have no inside space. It rains a lot in Seattle. Occasionally it sleets or even snows. Sometimes in late Spring the sun shines and it is hot. Children spend all of their time being outside in weather. Figure 8 shows a child enacting this interaction pattern on a January day of heavy rain. She is well dressed!

      Interaction pattern: being outside in weather.

      Being outside in weather is not only pervasive, but helps make possible many of the interactions that occur in a nature preschool. This is worth naming, and keeping in mind, when discussions occur about whether it is important to balance outside time with inside time in any specific nature school. It is also the case that this interaction pattern helps connect children with perhaps the wildest parts of nature that they have access to if the school is in an urban environment. For weather by definition is wild insofar as you do not control it: it is self-organizing, and it is big nature, some of the biggest, and while it can be nurturing and healing, it can also be fierce, and if you are not careful it can kill you. In this sense, children learn to respect nature, and to cohabit with the wild.

      Additional Keystone Interaction Patterns

      We have characterized seven keystone interaction patterns that have emerged from our observing children at Fiddleheads Forest School, and provided a nature language about them: using one’s body vigorously in nature, striking wood on wood, constructing shelter, being in solitude in nature, lying on earth, cohabiting with a wild animal, and being outside in weather. In two other recent venues, we have characterized an additional 14 keystone interaction patterns (Kahn and Weiss, 2017; Kahn et al., 2018b). Thus here, in Table 1, we bring together all of the keystone interaction patterns to date, and describe them briefly, and note the ontogenetic and/or phylogenetic significance of each of them. For the reader interested in a fuller explication of any of the additional interaction patterns, we delineate which additional pattern is discussed in which venue. Table 1 may be especially useful for practitioners insofar as it provides a condensed description of what children are actually doing at this nature preschool, and potentially other nature preschools with a similar landscape. For example, if a director of a nature preschool is trying to explain to parents what their children are actually doing each day outside, and why it is probably important for them, the director could draw directly on whatever parts of this table seem most relevant.

      Toward modeling child–nature interaction in a nature preschool: 20 keystone interaction patterns.

      Discussion

      The qualitative research presented in this article seeks to make a compelling case – as a proof of concept – that child–nature interaction can be modeled in a nature preschool based on interaction patterns.

      In support of our proof of concept, we provided a summary of the model’s underlying theory which draws from constructivist psychology, ecological psychology, and evolutionary psychology. We also provided an account of interaction patterns, and discussed the phenomenological model we are developing, and the issue of validation. Then we moved to the substance of our research. We provided a description of seven keystone interaction patterns that have emerged from our observational data, along with an extended nature language to convey their ontogenetic and phylogenetic significance. Finally, we integrated these 7 interaction patterns with 13 other patterns published elsewhere. Thus, for the first time, we have in this article presented and synthesized 20 keystone interaction patterns for this nature preschool.

      These 20 keystone interaction patterns do not complete the model for two reasons. First, additional qualitative analyses of more keystone interaction patterns is needed, along with a quantitative coding (with assessments of intercoder reliability) of all keystone interaction patterns so as to establish their relative frequency. We think we have most of the keystone interaction patterns identified, but not all of them. That work is currently ongoing, and will be reported at a later date. Second, our model is constructed to be open-ended, and thus is responsive to whomever wants to modify it based on their own sensibilities and goals. For example, it is possible to drill down with greater and greater specificity to name very specific interaction patterns, such as sitting on log with left foot in the air; sitting on log with left foot extended on ground. There are thousands of interaction patterns of this sort, if not more. Are they interesting? At this moment, not to us with the lenses that we bring forward, including that of developmental psychology, education, environmental education, and parenting. But if we were specialists in something like “child-sitting ergonomics,” then such interaction patterns could be of particular interest, and be elevated to a keystone level. Assuming that the modeling of the ergonomic child–nature interaction patterns are being done well, then it is not an issue of the modified model being right or wrong, but relevant or not relevant to a particular audience. That is an extreme example, of course. But it is possible that people even with a shared orientation may want to emphasize certain interaction patterns over others; and that is fine, and they would then provide the nature language to help others understand why that pattern is particularly significant. Thus in our view, our modeling is both product and process. Both are intellectual contributions.

      Part of the strength of our approach to modeling is that it can account for forms of interaction that cut across many if not all nature preschools, while allowing for differences in the way that the interactions are instantiated, or in terms of the subsets of interaction patterns that are called forward to comprise the larger pattern. For example, using one’s body vigorously may occur in all nature preschools, but in some schools that may involve running up a hill while also running on flat land while in other schools, like in the Fiddleheads main classrooms, there are no hills to speak of, so you would not see running up a hill. Or climbing high in small tree can occur in many different regions with many different species of small trees; though it will not occur in nature preschools where there are no trees. Thus future studies could employ our approach to modeling to compare nature preschools in different geographical locations (e.g., with more or less wild landscapes), or to compare nature preschools to traditional inside preschools in the same location. Along the same lines, our modeling, based on interaction patterns, can account for what is universal and particularistic based on culture and subgroups. Thus future studies could also employ our approach in comparative studies of nature preschools in different cultural settings.

      With a working model in hand, one can also move beyond comparative studies and generate and test important hypotheses. For example, one hypothesis that we are currently exploring is whether more relational forms of interaction with nature (such as calling birds, leaning against tree, and imitating animals) occur in landscapes that have affordances that are more wild. If such a hypothesis bears out, it would speak to the importance, even in modern times, for children to connect to more wild forms of nature to develop relational ways of engagement.

      Data Availability Statement

      The full video segments supporting each of the seven keystone interaction patterns will be made available by the authors, without undue reservation, to any qualified researcher.

      Author Contributions

      PK: conceived study, co-responsible for leading intellectual work, did most of the actual writing. TW: responsible for data collection, co-responsible for leading intellectual work, assisted with writing. KH: involved with implementation, intellectual work, and writing.

      Conflict of Interest Statement

      KH is the Director of the Fiddleheads Forest School where this research was carried out. The other authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

      We extend our appreciation to the teachers, parents, and children of Fiddleheads Forest School who graciously allowed for our extended filming, and to the following students who assisted with data collection and analyses: Kayla Carrington, Cassie Ho, Taylor Koch, Peter Kohring, Elizabeth Lev, and Honson Ling.

      References Adams C. (2012). Total Harmonic: The Healing Power of Nature’s Elements. Wilmington, DE: Logical Books. Alexander C. (1979). The Timeless Way of Building. New York, NY: Oxford University Press. Alexander C. Ishikawa S. Silverstein M. Jacobson M. Fiksdahl-King I. Angel S. (1977). A Pattern Language. New York, NY: Oxford University Press. Bakeman R. Gottman J. M. (1987). “Applying observational methods: a systematic view,” in Handbook of Infant Development 2nd Edn ed. Osofsky J. D. (New York, NY: Wiley) 818853. Barkow J. H. Cosmides L. Tooby J. (eds). (1992). The Adapted Mind: Evolutionary Psychology and the Generation of Culture. New York, NY: Oxford University Press. Borchers J. (2001). A Pattern Approach to Interaction Design. New York, NY: John Wiley and Sons. Brown J. M. Kaye C. (2017). Where do the children play? An investigation of the intersection of nature, early childhood education and play. Early Child Dev. Care 187 10281041. 10.1080/03004430.2016.1227325 Chawla L. (ed.). (2002). Growing up. (in) An Urbanizing World. New York, NY: Earthscan. Chevalier G. (2014). “The physics of Earthing – simplified,” in Earthing eds Ober C. Sinatra S. T. Zucker M. (Laguna Beach: CA: Basic Health Publications) 255265. Chung E. S. Hong J. I. Lin J. Prabaker M. K. Landay J. A. Liu A. L. (2004). Development and Evaluation of Emerging Design Patterns for Ubiquitous Computing. Cambridge, MA: ACM Press 233239. Cronon W. (1995). “The trouble with wilderness: or, getting back to the wrong nature,” in Uncommon Ground: Toward Reinventing Nature ed. Cronon W. (New York, NY: Norton) 6990. Davis W. (2007). Light at the Edge of the World: A Journey through the Realm of Vanishing Cultures. Vancouver: Douglas & McIntyre. Eisenberg C. (2013). “Quantifying wildness: a scientist’s lessons about wolves and wild nature,” in The Rediscovery of the Wild eds Kahn P. H. Jr Hasbach P. H. (Cambridge, MA: MIT Press) 125. Foreman D. (1991). Confessions of an Eco-Warrior. New York, NY: Crown. Frigg R. Hartmann S. (2012). Models in Science. Stanford Encyclopedia of Philosophy. Available at: https://plato.stanford.edu/entries/models-science/ [accessed October 7 2017]. Gabriel R. P. (1996). Patterns of Software: Tales from the Software Community. New York, NY: Oxford University Press. Gamma E. Helm R. Johnson R. Vlissides J. (1995). Design Patterns: Elements of Reusable Object-Oriented Software. Boston, MA: Addison-Wesley Longman. Gibson J. J. (1979/1986). The Ecological Approach to Visual Perception. Hillsdale, NJ: Lawrence Erlbaum Associates, Inc. Ginsburg K. R. (2007). The importance of play in promoting healthy child development and maintaining strong parent-child bonds. Pediatrics 199 182191. 10.1542/peds.2006-2697 17200287 Graham I. (2003). A Pattern Language for Web Usability. Boston, MA: Addison-Wesley. Hartig T. Kahn P. H. Jr. (2016). Living in cities, naturally. Science 352 938940. 10.1126/science.aaf3759 27199417 Hendrick B. (2011). Most Young Kid Don’t Get Enough Exercise. Available at: https://www.webmd.com/children/news/20110414/most-young-kids-dont-get-enough-exercise#1 [accessed April 2011]. Kahn P. H. Jr. (1999). The Human Relationship with Nature: Development and Culture. Cambridge, MA: MIT Press. Kahn P. H. Jr. (2009). Cohabitating with the wild. Ecopsychology 1 3846. 10.1089/eco.2009.0001 Kahn P. H. Jr. (2011). Technological Nature: Adaptation and the Future of Human Life. Cambridge, MA: MIT Press. Kahn P. H. Jr. Freier N. G. Kanda T. Ishiguro H. (2008). “Design patterns for sociality in human robot interaction,” in Proceedings of the 3rd ACM/IEEE International Conference on Human-Robot Interaction 2008 (New York, NY: Association for Computing Machinery) 271278. Kahn P. H. Jr. Hasbach P. H. (eds). (2013a). The Rediscovery of the Wild Cambridge, MA: MIT Press. Kahn P. H. Jr. Hasbach P. H. (2013b). “The rewilding of the human species,” in The Rediscovery of the Wild eds Kahn P. H. Jr Hasbach P. H. (Cambridge, MA: MIT Press) 207232. Kahn P. H. Jr. Lev E. M. Perrins S. P. Weiss T. Ehrlich T. Feinberg D. S. (2018a). Human-nature interaction patterns: constituents of a nature language for environmental sustainability. J. Biourb. 2 4157. Kahn P. H. Jr. Ruckert J. H. Hasbach P. H. (2012). “A nature language,” in Ecopsychology: Science, Totems, and the Technological Species eds Kahn P. H. Jr Hasbach P. H. (Cambridge, MA: MIT Press) 5577. Kahn P. H. Jr. Ruckert J. H. Severson R. L. Reichert A. L. Fowler E. (2010). A nature language: an agenda to catalog, save, and recover patterns of human-nature interaction. Ecopsychology 2 5966. 10.1089/eco.2009.0047 Kahn P. H. Jr. Weiss T. (2017). The importance of children interacting with big nature. Child. Youth Environ. 27 724. 10.7721/chilyoutenvi.27.2.0007 Kahn P. H. Jr. Weiss T. Harrington K. (2018b). “Child-nature interaction in a forest preschool,” in International Research Handbook on Childhood Nature eds Cutter-Mackenzie A. Malone K. Hacking E. B. (Cham: Springer). 10.1007/978-3-319-51949-4_33-1 Kellert S. R. Wilson E. O. (eds). (1993). The Biophilia Hypothesis Washington, DC: Island Press. Kohlberg L. (1969). “Stage and sequence: the cognitive-developmental approach to socialization,” in Handbook of Socialization Theory and Research ed. Goslin D. A. (New York, NY: Rand McNally) 347480. Kohlberg L. (1971). “From is to ought: how to commit the naturalistic fallacy and get away with it in the study of moral development,” in Psychology and Genetic Epistemology ed. Mischel T. (New York, NY: Academic Press) 151235. Langer J. (1969). Theories of Development. New York, NY: Holt Rinehart and Winston. Li K. Haynie D. Lipsky L. Iannotti R. J. Pratt C. Simons-Morton B. (2016). Changes in Moderate-to-Vigorous Physical Activity among Older Adolescents. Available at: http://pediatrics.aappublications.org/ Lowry C. A. Hollis J. H. de Vries A. Pan B. Brunet L. R. Hunt J. R. (2007). Identification of an immune-responsive mesolimbocortical serotonergic system: potential role in regulation of emotional behavior. Neuroscience 146 756772. 10.1016/j.neuroscience.2007.01.067 17367941 Magnusson M. S. (2000). Discovering hidden time patterns in behavior: T-patterns and their detection. Behav. Res. Methods Instrum. Comput. 32 93110. 10.3758/BF03200792 Marshall J. (2002). A Kalahari family: A Film Series by John Marshall. Watertown, MA: Documentary Educational Resources. Mills L. S. Soulé M. E. Doak D. F. (1993). The keystone-species concept in ecology and conservation. Bioscience 43 219224. 10.1111/ele.12014 23062191 Milton J. (1674/1978). “Paradise lost,” in John Milton: Complete Poems and Major Prose ed. Hughes M. Y. (Indianapolis, IN: Odyssey Press) 211469. Morrissey A.-M. Scott C. Rahimi M. (2017). A comparison of sociodramatic play processes of preschoolers in a naturalized and a traditional outdoor space. Int. J. Play 6 177197. 10.1080/21594937.2017.1348321 Muir J. (1976). “The philosophy of John Muir,” in The Wilderness World of John Muir ed. Teale E. W. (Boston, MA: Houghton Mifflin) 311323. Nabhan G. P. Trimble S. (1994). The Geography of Childhood: Why Children Need Wild Places. Boston, MA: Beacon Press. North American Association for Environmental Education [NAAEE] (2017). Nature Preschools and Forest Kindergartens: 2017 National Survey. Washington, DC: NAAEE. Paine R. T. (1995). A conversation on refining the concept of keystone species. Conserv. Biol. 9 962964. 10.1046/j.1523-1739.1995.09040962.x Piaget J. (1983). “Piaget’s theory,” in Handbook of Child Psychology History, Theory, and Methods Vol. 1 4th Edn ed. Mussen P. H. Kessen W. (New York, NY: Wiley) 103128. Piaget J. (1952/1963). The Origins of Intelligence in Children. New York, NY: Norton. Rolston H III (1989). Philosophy Gone Wild. Buffalo, NY: Prometheus Books. Sackett G. P. (ed.). (1978). Observing Behavior Data collection and Analysis Methods. Baltimore, MD: University of Park Press. Sampson S. D. (2012). “The topophilia hypothesis: Ecopsychology meets evolutionary psychology,” in Ecopsychology: Science, Totems, and the Technological Species eds Kahn P. H. Jr Hasbach P. H. (Cambridge, MA: MIT Press) 2353. Sampson S. D. (2015). How to Raise a Wild Child. New York, NY: Houghton Mifflin Harcourt. Shepard P. (1982). Nature and Madness. Athens, GA: University of Georgia Press. Shepard P. (1998). Coming Home to the Pleistocene. Washington, DC: Island Press. Sobel D. (1993). Children’s Special Places. Tucson. Arizona, AZ: Zephyr Press. Sobel D. (2008). Childhood and Nature. Portland, ME: Stenhouse. Stoffregen T. A. (2003). Affordances as properties of the animal–environment system. Ecol. Psychol. 15 115134. 10.1207/S15326969ECO1502_2 Thomas E. M. (2006). The Old Way: A Story of the First People. New York, NY: Farrar, Straus, & Giroux. Turiel E. (1983). The Development of Social Knowledge. Cambridge: Cambridge University Press. Turner J. (1996). The Abstract Wild. Tucson, AZ: The University of Arizona Press. Turvey M. T. (1992). Affordances and prospective control: an outline of the ontology. Ecol. Psychol. 4 173187. 10.1207/s15326969eco0403_3 Vygotsky L. S. (1978). Mind in Society. Cambridge: Harvard University Press. Wilson E. O. (1984). Biophilia. Cambridge, MA: Harvard University Press. Wilson E. O. (1993). “Biophilia and the conservation ethic,” in The Biophilia Hypothesis eds Kellert S. R. Wilson E. O. (Washington, DC: Island Press) 3141. Youth Physical Activity (2009). Center for Disease Control. Available at: https://www.cdc.gov/healthyyouth/physicalactivity/toolkit/factsheet_pa_guidelines_families.pdf
      ‘Oh, my dear Thomas, you haven’t heard the terrible news then?’ she said. ‘I thought you would be sure to have seen it placarded somewhere. Alice went straight to her room, and I haven’t seen her since, though I repeatedly knocked at the door, which she has locked on the inside, and I’m sure it’s most unnatural of her not to let her own mother comfort her. It all happened in a moment: I have always said those great motor-cars shouldn’t be allowed to career about the streets, especially when they are all paved with cobbles as they are at Easton Haven, which are{331} so slippery when it’s wet. He slipped, and it went over him in a moment.’ My thanks were few and awkward, for there still hung to the missive a basting thread, and it was as warm as a nestling bird. I bent low--everybody was emotional in those days--kissed the fragrant thing, thrust it into my bosom, and blushed worse than Camille. "What, the Corner House victim? Is that really a fact?" "My dear child, I don't look upon it in that light at all. The child gave our picturesque friend a certain distinction--'My husband is dead, and this is my only child,' and all that sort of thing. It pays in society." leave them on the steps of a foundling asylum in order to insure [See larger version] Interoffice guff says you're planning definite moves on your own, J. O., and against some opposition. Is the Colonel so poor or so grasping—or what? Albert could not speak, for he felt as if his brains and teeth were rattling about inside his head. The rest of[Pg 188] the family hunched together by the door, the boys gaping idiotically, the girls in tears. "Now you're married." The host was called in, and unlocked a drawer in which they were deposited. The galleyman, with visible reluctance, arrayed himself in the garments, and he was observed to shudder more than once during the investiture of the dead man's apparel. HoME香京julia种子在线播放 ENTER NUMBET 0016www.iuzkjx.com.cn
      lnfdsl.org.cn
      www.silk-ev.com.cn
      www.rmchain.com.cn
      rtattoo.com.cn
      www.owhuhf.com.cn
      slchain.com.cn
      trchain.com.cn
      www.sukkhi.com.cn
      nkchain.com.cn
      处女被大鸡巴操 强奸乱伦小说图片 俄罗斯美女爱爱图 调教强奸学生 亚洲女的穴 夜来香图片大全 美女性强奸电影 手机版色中阁 男性人体艺术素描图 16p成人 欧美性爱360 电影区 亚洲电影 欧美电影 经典三级 偷拍自拍 动漫电影 乱伦电影 变态另类 全部电 类似狠狠鲁的网站 黑吊操白逼图片 韩国黄片种子下载 操逼逼逼逼逼 人妻 小说 p 偷拍10幼女自慰 极品淫水很多 黄色做i爱 日本女人人体电影快播看 大福国小 我爱肏屄美女 mmcrwcom 欧美多人性交图片 肥臀乱伦老头舔阴帝 d09a4343000019c5 西欧人体艺术b xxoo激情短片 未成年人的 插泰国人夭图片 第770弾み1 24p 日本美女性 交动态 eee色播 yantasythunder 操无毛少女屄 亚洲图片你懂的女人 鸡巴插姨娘 特级黄 色大片播 左耳影音先锋 冢本友希全集 日本人体艺术绿色 我爱被舔逼 内射 幼 美阴图 喷水妹子高潮迭起 和后妈 操逼 美女吞鸡巴 鸭个自慰 中国女裸名单 操逼肥臀出水换妻 色站裸体义术 中国行上的漏毛美女叫什么 亚洲妹性交图 欧美美女人裸体人艺照 成人色妹妹直播 WWW_JXCT_COM r日本女人性淫乱 大胆人艺体艺图片 女同接吻av 碰碰哥免费自拍打炮 艳舞写真duppid1 88电影街拍视频 日本自拍做爱qvod 实拍美女性爱组图 少女高清av 浙江真实乱伦迅雷 台湾luanlunxiaoshuo 洛克王国宠物排行榜 皇瑟电影yy频道大全 红孩儿连连看 阴毛摄影 大胆美女写真人体艺术摄影 和风骚三个媳妇在家做爱 性爱办公室高清 18p2p木耳 大波撸影音 大鸡巴插嫩穴小说 一剧不超两个黑人 阿姨诱惑我快播 幼香阁千叶县小学生 少女妇女被狗强奸 曰人体妹妹 十二岁性感幼女 超级乱伦qvod 97爱蜜桃ccc336 日本淫妇阴液 av海量资源999 凤凰影视成仁 辰溪四中艳照门照片 先锋模特裸体展示影片 成人片免费看 自拍百度云 肥白老妇女 女爱人体图片 妈妈一女穴 星野美夏 日本少女dachidu 妹子私处人体图片 yinmindahuitang 舔无毛逼影片快播 田莹疑的裸体照片 三级电影影音先锋02222 妻子被外国老头操 观月雏乃泥鳅 韩国成人偷拍自拍图片 强奸5一9岁幼女小说 汤姆影院av图片 妹妹人艺体图 美女大驱 和女友做爱图片自拍p 绫川まどか在线先锋 那么嫩的逼很少见了 小女孩做爱 处女好逼连连看图图 性感美女在家做爱 近距离抽插骚逼逼 黑屌肏金毛屄 日韩av美少女 看喝尿尿小姐日逼色色色网图片 欧美肛交新视频 美女吃逼逼 av30线上免费 伊人在线三级经典 新视觉影院t6090影院 最新淫色电影网址 天龙影院远古手机版 搞老太影院 插进美女的大屁股里 私人影院加盟费用 www258dd 求一部电影里面有一个二猛哥 深肛交 日本萌妹子人体艺术写真图片 插入屄眼 美女的木奶 中文字幕黄色网址影视先锋 九号女神裸 和骚人妻偷情 和潘晓婷做爱 国模大尺度蜜桃 欧美大逼50p 西西人体成人 李宗瑞继母做爱原图物处理 nianhuawang 男鸡巴的视屏 � 97免费色伦电影 好色网成人 大姨子先锋 淫荡巨乳美女教师妈妈 性nuexiaoshuo WWW36YYYCOM 长春继续给力进屋就操小女儿套干破内射对白淫荡 农夫激情社区 日韩无码bt 欧美美女手掰嫩穴图片 日本援交偷拍自拍 入侵者日本在线播放 亚洲白虎偷拍自拍 常州高见泽日屄 寂寞少妇自卫视频 人体露逼图片 多毛外国老太 变态乱轮手机在线 淫荡妈妈和儿子操逼 伦理片大奶少女 看片神器最新登入地址sqvheqi345com账号群 麻美学姐无头 圣诞老人射小妞和强奸小妞动话片 亚洲AV女老师 先锋影音欧美成人资源 33344iucoom zV天堂电影网 宾馆美女打炮视频 色五月丁香五月magnet 嫂子淫乱小说 张歆艺的老公 吃奶男人视频在线播放 欧美色图男女乱伦 avtt2014ccvom 性插色欲香影院 青青草撸死你青青草 99热久久第一时间 激情套图卡通动漫 幼女裸聊做爱口交 日本女人被强奸乱伦 草榴社区快播 2kkk正在播放兽骑 啊不要人家小穴都湿了 www猎奇影视 A片www245vvcomwwwchnrwhmhzcn 搜索宜春院av wwwsee78co 逼奶鸡巴插 好吊日AV在线视频19gancom 熟女伦乱图片小说 日本免费av无码片在线开苞 鲁大妈撸到爆 裸聊官网 德国熟女xxx 新不夜城论坛首页手机 女虐男网址 男女做爱视频华为网盘 激情午夜天亚洲色图 内裤哥mangent 吉沢明歩制服丝袜WWWHHH710COM 屌逼在线试看 人体艺体阿娇艳照 推荐一个可以免费看片的网站如果被QQ拦截请复制链接在其它浏览器打开xxxyyy5comintr2a2cb551573a2b2e 欧美360精品粉红鲍鱼 教师调教第一页 聚美屋精品图 中韩淫乱群交 俄罗斯撸撸片 把鸡巴插进小姨子的阴道 干干AV成人网 aolasoohpnbcn www84ytom 高清大量潮喷www27dyycom 宝贝开心成人 freefronvideos人母 嫩穴成人网gggg29com 逼着舅妈给我口交肛交彩漫画 欧美色色aV88wwwgangguanscom 老太太操逼自拍视频 777亚洲手机在线播放 有没有夫妻3p小说 色列漫画淫女 午间色站导航 欧美成人处女色大图 童颜巨乳亚洲综合 桃色性欲草 色眯眯射逼 无码中文字幕塞外青楼这是一个 狂日美女老师人妻 爱碰网官网 亚洲图片雅蠛蝶 快播35怎么搜片 2000XXXX电影 新谷露性家庭影院 深深候dvd播放 幼齿用英语怎么说 不雅伦理无需播放器 国外淫荡图片 国外网站幼幼嫩网址 成年人就去色色视频快播 我鲁日日鲁老老老我爱 caoshaonvbi 人体艺术avav 性感性色导航 韩国黄色哥来嫖网站 成人网站美逼 淫荡熟妇自拍 欧美色惰图片 北京空姐透明照 狼堡免费av视频 www776eom 亚洲无码av欧美天堂网男人天堂 欧美激情爆操 a片kk266co 色尼姑成人极速在线视频 国语家庭系列 蒋雯雯 越南伦理 色CC伦理影院手机版 99jbbcom 大鸡巴舅妈 国产偷拍自拍淫荡对话视频 少妇春梦射精 开心激动网 自拍偷牌成人 色桃隐 撸狗网性交视频 淫荡的三位老师 伦理电影wwwqiuxia6commqiuxia6com 怡春院分站 丝袜超短裙露脸迅雷下载 色制服电影院 97超碰好吊色男人 yy6080理论在线宅男日韩福利大全 大嫂丝袜 500人群交手机在线 5sav 偷拍熟女吧 口述我和妹妹的欲望 50p电脑版 wwwavtttcon 3p3com 伦理无码片在线看 欧美成人电影图片岛国性爱伦理电影 先锋影音AV成人欧美 我爱好色 淫电影网 WWW19MMCOM 玛丽罗斯3d同人动画h在线看 动漫女孩裸体 超级丝袜美腿乱伦 1919gogo欣赏 大色逼淫色 www就是撸 激情文学网好骚 A级黄片免费 xedd5com 国内的b是黑的 快播美国成年人片黄 av高跟丝袜视频 上原保奈美巨乳女教师在线观看 校园春色都市激情fefegancom 偷窥自拍XXOO 搜索看马操美女 人本女优视频 日日吧淫淫 人妻巨乳影院 美国女子性爱学校 大肥屁股重口味 啪啪啪啊啊啊不要 操碰 japanfreevideoshome国产 亚州淫荡老熟女人体 伦奸毛片免费在线看 天天影视se 樱桃做爱视频 亚卅av在线视频 x奸小说下载 亚洲色图图片在线 217av天堂网 东方在线撸撸-百度 幼幼丝袜集 灰姑娘的姐姐 青青草在线视频观看对华 86papa路con 亚洲1AV 综合图片2区亚洲 美国美女大逼电影 010插插av成人网站 www色comwww821kxwcom 播乐子成人网免费视频在线观看 大炮撸在线影院 ,www4KkKcom 野花鲁最近30部 wwwCC213wapwww2233ww2download 三客优最新地址 母亲让儿子爽的无码视频 全国黄色片子 欧美色图美国十次 超碰在线直播 性感妖娆操 亚洲肉感熟女色图 a片A毛片管看视频 8vaa褋芯屑 333kk 川岛和津实视频 在线母子乱伦对白 妹妹肥逼五月 亚洲美女自拍 老婆在我面前小说 韩国空姐堪比情趣内衣 干小姐综合 淫妻色五月 添骚穴 WM62COM 23456影视播放器 成人午夜剧场 尼姑福利网 AV区亚洲AV欧美AV512qucomwwwc5508com 经典欧美骚妇 震动棒露出 日韩丝袜美臀巨乳在线 av无限吧看 就去干少妇 色艺无间正面是哪集 校园春色我和老师做爱 漫画夜色 天海丽白色吊带 黄色淫荡性虐小说 午夜高清播放器 文20岁女性荫道口图片 热国产热无码热有码 2015小明发布看看算你色 百度云播影视 美女肏屄屄乱轮小说 家族舔阴AV影片 邪恶在线av有码 父女之交 关于处女破处的三级片 极品护士91在线 欧美虐待女人视频的网站 享受老太太的丝袜 aaazhibuo 8dfvodcom成人 真实自拍足交 群交男女猛插逼 妓女爱爱动态 lin35com是什么网站 abp159 亚洲色图偷拍自拍乱伦熟女抠逼自慰 朝国三级篇 淫三国幻想 免费的av小电影网站 日本阿v视频免费按摩师 av750c0m 黄色片操一下 巨乳少女车震在线观看 操逼 免费 囗述情感一乱伦岳母和女婿 WWW_FAMITSU_COM 偷拍中国少妇在公车被操视频 花也真衣论理电影 大鸡鸡插p洞 新片欧美十八岁美少 进击的巨人神thunderftp 西方美女15p 深圳哪里易找到老女人玩视频 在线成人有声小说 365rrr 女尿图片 我和淫荡的小姨做爱 � 做爱技术体照 淫妇性爱 大学生私拍b 第四射狠狠射小说 色中色成人av社区 和小姨子乱伦肛交 wwwppp62com 俄罗斯巨乳人体艺术 骚逼阿娇 汤芳人体图片大胆 大胆人体艺术bb私处 性感大胸骚货 哪个网站幼女的片多 日本美女本子把 色 五月天 婷婷 快播 美女 美穴艺术 色百合电影导航 大鸡巴用力 孙悟空操美少女战士 狠狠撸美女手掰穴图片 古代女子与兽类交 沙耶香套图 激情成人网区 暴风影音av播放 动漫女孩怎么插第3个 mmmpp44 黑木麻衣无码ed2k 淫荡学姐少妇 乱伦操少女屄 高中性爱故事 骚妹妹爱爱图网 韩国模特剪长发 大鸡巴把我逼日了 中国张柏芝做爱片中国张柏芝做爱片中国张柏芝做爱片中国张柏芝做爱片中国张柏芝做爱片 大胆女人下体艺术图片 789sss 影音先锋在线国内情侣野外性事自拍普通话对白 群撸图库 闪现君打阿乐 ady 小说 插入表妹嫩穴小说 推荐成人资源 网络播放器 成人台 149大胆人体艺术 大屌图片 骚美女成人av 春暖花开春色性吧 女亭婷五月 我上了同桌的姐姐 恋夜秀场主播自慰视频 yzppp 屄茎 操屄女图 美女鲍鱼大特写 淫乱的日本人妻山口玲子 偷拍射精图 性感美女人体艺木图片 种马小说完本 免费电影院 骑士福利导航导航网站 骚老婆足交 国产性爱一级电影 欧美免费成人花花性都 欧美大肥妞性爱视频 家庭乱伦网站快播 偷拍自拍国产毛片 金发美女也用大吊来开包 缔D杏那 yentiyishu人体艺术ytys WWWUUKKMCOM 女人露奶 � 苍井空露逼 老荡妇高跟丝袜足交 偷偷和女友的朋友做爱迅雷 做爱七十二尺 朱丹人体合成 麻腾由纪妃 帅哥撸播种子图 鸡巴插逼动态图片 羙国十次啦中文 WWW137AVCOM 神斗片欧美版华语 有气质女人人休艺术 由美老师放屁电影 欧美女人肉肏图片 白虎种子快播 国产自拍90后女孩 美女在床上疯狂嫩b 饭岛爱最后之作 幼幼强奸摸奶 色97成人动漫 两性性爱打鸡巴插逼 新视觉影院4080青苹果影院 嗯好爽插死我了 阴口艺术照 李宗瑞电影qvod38 爆操舅母 亚洲色图七七影院 被大鸡巴操菊花 怡红院肿么了 成人极品影院删除 欧美性爱大图色图强奸乱 欧美女子与狗随便性交 苍井空的bt种子无码 熟女乱伦长篇小说 大色虫 兽交幼女影音先锋播放 44aad be0ca93900121f9b 先锋天耗ばさ无码 欧毛毛女三级黄色片图 干女人黑木耳照 日本美女少妇嫩逼人体艺术 sesechangchang 色屄屄网 久久撸app下载 色图色噜 美女鸡巴大奶 好吊日在线视频在线观看 透明丝袜脚偷拍自拍 中山怡红院菜单 wcwwwcom下载 骑嫂子 亚洲大色妣 成人故事365ahnet 丝袜家庭教mp4 幼交肛交 妹妹撸撸大妈 日本毛爽 caoprom超碰在email 关于中国古代偷窥的黄片 第一会所老熟女下载 wwwhuangsecome 狼人干综合新地址HD播放 变态儿子强奸乱伦图 强奸电影名字 2wwwer37com 日本毛片基地一亚洲AVmzddcxcn 暗黑圣经仙桃影院 37tpcocn 持月真由xfplay 好吊日在线视频三级网 我爱背入李丽珍 电影师傅床戏在线观看 96插妹妹sexsex88com 豪放家庭在线播放 桃花宝典极夜著豆瓜网 安卓系统播放神器 美美网丝袜诱惑 人人干全免费视频xulawyercn av无插件一本道 全国色五月 操逼电影小说网 good在线wwwyuyuelvcom www18avmmd 撸波波影视无插件 伊人幼女成人电影 会看射的图片 小明插看看 全裸美女扒开粉嫩b 国人自拍性交网站 萝莉白丝足交本子 七草ちとせ巨乳视频 摇摇晃晃的成人电影 兰桂坊成社人区小说www68kqcom 舔阴论坛 久撸客一撸客色国内外成人激情在线 明星门 欧美大胆嫩肉穴爽大片 www牛逼插 性吧星云 少妇性奴的屁眼 人体艺术大胆mscbaidu1imgcn 最新久久色色成人版 l女同在线 小泽玛利亚高潮图片搜索 女性裸b图 肛交bt种子 最热门有声小说 人间添春色 春色猜谜字 樱井莉亚钢管舞视频 小泽玛利亚直美6p 能用的h网 还能看的h网 bl动漫h网 开心五月激 东京热401 男色女色第四色酒色网 怎么下载黄色小说 黄色小说小栽 和谐图城 乐乐影院 色哥导航 特色导航 依依社区 爱窝窝在线 色狼谷成人 91porn 包要你射电影 色色3A丝袜 丝袜妹妹淫网 爱色导航(荐) 好男人激情影院 坏哥哥 第七色 色久久 人格分裂 急先锋 撸撸射中文网 第一会所综合社区 91影院老师机 东方成人激情 怼莪影院吹潮 老鸭窝伊人无码不卡无码一本道 av女柳晶电影 91天生爱风流作品 深爱激情小说私房婷婷网 擼奶av 567pao 里番3d一家人野外 上原在线电影 水岛津实透明丝袜 1314酒色 网旧网俺也去 0855影院 在线无码私人影院 搜索 国产自拍 神马dy888午夜伦理达达兔 农民工黄晓婷 日韩裸体黑丝御姐 屈臣氏的燕窝面膜怎么样つぼみ晶エリーの早漏チ○ポ强化合宿 老熟女人性视频 影音先锋 三上悠亚ol 妹妹影院福利片 hhhhhhhhsxo 午夜天堂热的国产 强奸剧场 全裸香蕉视频无码 亚欧伦理视频 秋霞为什么给封了 日本在线视频空天使 日韩成人aⅴ在线 日本日屌日屄导航视频 在线福利视频 日本推油无码av magnet 在线免费视频 樱井梨吮东 日本一本道在线无码DVD 日本性感诱惑美女做爱阴道流水视频 日本一级av 汤姆avtom在线视频 台湾佬中文娱乐线20 阿v播播下载 橙色影院 奴隶少女护士cg视频 汤姆在线影院无码 偷拍宾馆 业面紧急生级访问 色和尚有线 厕所偷拍一族 av女l 公交色狼优酷视频 裸体视频AV 人与兽肉肉网 董美香ol 花井美纱链接 magnet 西瓜影音 亚洲 自拍 日韩女优欧美激情偷拍自拍 亚洲成年人免费视频 荷兰免费成人电影 深喉呕吐XXⅩX 操石榴在线视频 天天色成人免费视频 314hu四虎 涩久免费视频在线观看 成人电影迅雷下载 能看见整个奶子的香蕉影院 水菜丽百度影音 gwaz079百度云 噜死你们资源站 主播走光视频合集迅雷下载 thumbzilla jappen 精品Av 古川伊织star598在线 假面女皇vip在线视频播放 国产自拍迷情校园 啪啪啪公寓漫画 日本阿AV 黄色手机电影 欧美在线Av影院 华裔电击女神91在线 亚洲欧美专区 1日本1000部免费视频 开放90后 波多野结衣 东方 影院av 页面升级紧急访问每天正常更新 4438Xchengeren 老炮色 a k福利电影 色欲影视色天天视频 高老庄aV 259LUXU-683 magnet 手机在线电影 国产区 欧美激情人人操网 国产 偷拍 直播 日韩 国内外激情在线视频网给 站长统计一本道人妻 光棍影院被封 紫竹铃取汁 ftp 狂插空姐嫩 xfplay 丈夫面前 穿靴子伪街 XXOO视频在线免费 大香蕉道久在线播放 电棒漏电嗨过头 充气娃能看下毛和洞吗 夫妻牲交 福利云点墦 yukun瑟妃 疯狂交换女友 国产自拍26页 腐女资源 百度云 日本DVD高清无码视频 偷拍,自拍AV伦理电影 A片小视频福利站。 大奶肥婆自拍偷拍图片 交配伊甸园 超碰在线视频自拍偷拍国产 小热巴91大神 rctd 045 类似于A片 超美大奶大学生美女直播被男友操 男友问 你的衣服怎么脱掉的 亚洲女与黑人群交视频一 在线黄涩 木内美保步兵番号 鸡巴插入欧美美女的b舒服 激情在线国产自拍日韩欧美 国语福利小视频在线观看 作爱小视颍 潮喷合集丝袜无码mp4 做爱的无码高清视频 牛牛精品 伊aⅤ在线观看 savk12 哥哥搞在线播放 在线电一本道影 一级谍片 250pp亚洲情艺中心,88 欧美一本道九色在线一 wwwseavbacom色av吧 cos美女在线 欧美17,18ⅹⅹⅹ视频 自拍嫩逼 小电影在线观看网站 筱田优 贼 水电工 5358x视频 日本69式视频有码 b雪福利导航 韩国女主播19tvclub在线 操逼清晰视频 丝袜美女国产视频网址导航 水菜丽颜射房间 台湾妹中文娱乐网 风吟岛视频 口交 伦理 日本熟妇色五十路免费视频 A级片互舔 川村真矢Av在线观看 亚洲日韩av 色和尚国产自拍 sea8 mp4 aV天堂2018手机在线 免费版国产偷拍a在线播放 狠狠 婷婷 丁香 小视频福利在线观看平台 思妍白衣小仙女被邻居强上 萝莉自拍有水 4484新视觉 永久发布页 977成人影视在线观看 小清新影院在线观 小鸟酱后丝后入百度云 旋风魅影四级 香蕉影院小黄片免费看 性爱直播磁力链接 小骚逼第一色影院 性交流的视频 小雪小视频bd 小视频TV禁看视频 迷奸AV在线看 nba直播 任你在干线 汤姆影院在线视频国产 624u在线播放 成人 一级a做爰片就在线看狐狸视频 小香蕉AV视频 www182、com 腿模简小育 学生做爱视频 秘密搜查官 快播 成人福利网午夜 一级黄色夫妻录像片 直接看的gav久久播放器 国产自拍400首页 sm老爹影院 谁知道隔壁老王网址在线 综合网 123西瓜影音 米奇丁香 人人澡人人漠大学生 色久悠 夜色视频你今天寂寞了吗? 菲菲影视城美国 被抄的影院 变态另类 欧美 成人 国产偷拍自拍在线小说 不用下载安装就能看的吃男人鸡巴视频 插屄视频 大贯杏里播放 wwwhhh50 233若菜奈央 伦理片天海翼秘密搜查官 大香蕉在线万色屋视频 那种漫画小说你懂的 祥仔电影合集一区 那里可以看澳门皇冠酒店a片 色自啪 亚洲aV电影天堂 谷露影院ar toupaizaixian sexbj。com 毕业生 zaixian mianfei 朝桐光视频 成人短视频在线直接观看 陈美霖 沈阳音乐学院 导航女 www26yjjcom 1大尺度视频 开平虐女视频 菅野雪松协和影视在线视频 华人play在线视频bbb 鸡吧操屄视频 多啪啪免费视频 悠草影院 金兰策划网 (969) 橘佑金短视频 国内一极刺激自拍片 日本制服番号大全magnet 成人动漫母系 电脑怎么清理内存 黄色福利1000 dy88午夜 偷拍中学生洗澡磁力链接 花椒相机福利美女视频 站长推荐磁力下载 mp4 三洞轮流插视频 玉兔miki热舞视频 夜生活小视频 爆乳人妖小视频 国内网红主播自拍福利迅雷下载 不用app的裸裸体美女操逼视频 变态SM影片在线观看 草溜影院元气吧 - 百度 - 百度 波推全套视频 国产双飞集合ftp 日本在线AV网 笔国毛片 神马影院女主播是我的邻居 影音资源 激情乱伦电影 799pao 亚洲第一色第一影院 av视频大香蕉 老梁故事汇希斯莱杰 水中人体磁力链接 下载 大香蕉黄片免费看 济南谭崔 避开屏蔽的岛a片 草破福利 要看大鸡巴操小骚逼的人的视频 黑丝少妇影音先锋 欧美巨乳熟女磁力链接 美国黄网站色大全 伦蕉在线久播 极品女厕沟 激情五月bd韩国电影 混血美女自摸和男友激情啪啪自拍诱人呻吟福利视频 人人摸人人妻做人人看 44kknn 娸娸原网 伊人欧美 恋夜影院视频列表安卓青青 57k影院 如果电话亭 avi 插爆骚女精品自拍 青青草在线免费视频1769TV 令人惹火的邻家美眉 影音先锋 真人妹子被捅动态图 男人女人做完爱视频15 表姐合租两人共处一室晚上她竟爬上了我的床 性爱教学视频 北条麻妃bd在线播放版 国产老师和师生 magnet wwwcctv1024 女神自慰 ftp 女同性恋做激情视频 欧美大胆露阴视频 欧美无码影视 好女色在线观看 后入肥臀18p 百度影视屏福利 厕所超碰视频 强奸mp magnet 欧美妹aⅴ免费线上看 2016年妞干网视频 5手机在线福利 超在线最视频 800av:cOm magnet 欧美性爱免播放器在线播放 91大款肥汤的性感美乳90后邻家美眉趴着窗台后入啪啪 秋霞日本毛片网站 cheng ren 在线视频 上原亚衣肛门无码解禁影音先锋 美脚家庭教师在线播放 尤酷伦理片 熟女性生活视频在线观看 欧美av在线播放喷潮 194avav 凤凰AV成人 - 百度 kbb9999 AV片AV在线AV无码 爱爱视频高清免费观看 黄色男女操b视频 观看 18AV清纯视频在线播放平台 成人性爱视频久久操 女性真人生殖系统双性人视频 下身插入b射精视频 明星潜规测视频 mp4 免賛a片直播绪 国内 自己 偷拍 在线 国内真实偷拍 手机在线 国产主播户外勾在线 三桥杏奈高清无码迅雷下载 2五福电影院凸凹频频 男主拿鱼打女主,高宝宝 色哥午夜影院 川村まや痴汉 草溜影院费全过程免费 淫小弟影院在线视频 laohantuiche 啪啪啪喷潮XXOO视频 青娱乐成人国产 蓝沢润 一本道 亚洲青涩中文欧美 神马影院线理论 米娅卡莉法的av 在线福利65535 欧美粉色在线 欧美性受群交视频1在线播放 极品喷奶熟妇在线播放 变态另类无码福利影院92 天津小姐被偷拍 磁力下载 台湾三级电髟全部 丝袜美腿偷拍自拍 偷拍女生性行为图 妻子的乱伦 白虎少妇 肏婶骚屄 外国大妈会阴照片 美少女操屄图片 妹妹自慰11p 操老熟女的b 361美女人体 360电影院樱桃 爱色妹妹亚洲色图 性交卖淫姿势高清图片一级 欧美一黑对二白 大色网无毛一线天 射小妹网站 寂寞穴 西西人体模特苍井空 操的大白逼吧 骚穴让我操 拉好友干女朋友3p