Nature as a Therapeutic Space: Theoretical Foundations and Psychological Applications

Article written in collaboration with @talentiautistici

Abstract

This article examines the theoretical foundations and empirical evidence that support the use of the natural environment as a therapeutic context and promoter of psychological well-being. Through the analysis of the main reference theories — Attention Restoration Theory (Kaplan & Kaplan, 1989), Stress Recovery Theory (Ulrich, 1983), the theory of biophilia (Wilson, 1984), and the ecopsychology framework (Roszak, 1992) — the physiological, cognitive, and relational mechanisms through which contact with nature affects human well-being are illustrated. Practical applications in clinical and psychoeducational settings are also discussed, with particular attention to forest bathing experiences, animal activities, garden care, and expressive workshops in natural contexts.

Introduction

The relationship between humans and the natural environment is a growing subject of study in environmental psychology, cognitive neuroscience, and clinical psychology. Although rapid urbanization has progressively driven large segments of the population away from natural environments, research in recent decades has systematically documented the benefits of contact with nature on mental and physical well-being (Bratman et al., 2019; White et al., 2019).

This paper aims to offer an organic theoretical framework that integrates the main explanatory models available in the literature, while illustrating possible practical declinations in the psychoeducational and therapeutic fields. The focus will be not only on the mechanisms through which nature acts on the nervous system and mood, but also on its role as a relational, creative, and identity space.

Theoretical framework of reference

Attention Restoration Theory

Attention retrieval theory, formulated by Rachel and Stephen Kaplan (1989), represents one of the most influential models for understanding the relationship between nature and cognitive well-being. The authors distinguish between direct attention —the voluntary and deliberate attention employed in complex cognitive tasks— and involuntary attention, which is spontaneously captured by stimuli deemed intrinsically interesting without requiring mental effort (Kaplan & Kaplan, 1989).

Prolonged exposure to urban environments characterized by intense stimuli, noise, and constant demands for direct attention leads to a state of mental fatigue (directed attention fatigue), which manifests itself in irritability, difficulty concentrating, and reduced decision-making ability. Natural environments, on the other hand, allow direct attention to rest by activating involuntary attention through stimuli such as water noise, leaf movement, or visual patterns of vegetation (Kaplan, 1995).

For an environment to produce a full regenerative effect, Kaplan and Kaplan (1989) identify four necessary conditions: fascination (presence of stimuli that spontaneously capture attention), being away (perceived distance from daily routine), extent (perceived breadth and coherence of the environment), and compatibility (adequacy of the environment to the needs and inclinations of the individual). The convergence of these four qualities makes the forest and the natural park particularly effective environments for cognitive recovery.

Stress Recovery Theory

In parallel with ART, Roger Ulrich developed Stress Recovery Theory (SRT), which focuses not on cognitive processes but on the physiological stress response (Ulrich, 1983; Ulrich et al., 1991). Starting from an evolutionary hypothesis, Ulrich argues that the human nervous system has co-evolved with natural environments and tends to interpret certain landscapes — open meadows with vegetation, the presence of water, broad horizons — as ancestral signs of security and abundance of resources.

Exposure to these environments automatically activates the parasympathetic nervous system, producing within minutes a measurable reduction in cortisol, heart rate, and blood pressure, with a concomitant increase in positive affective tone (Ulrich et al., 1991). These effects have also been documented in response to images of nature or views from the window, suggesting that simple eye contact with natural elements is sufficient to initiate the recovery response (Ulrich, 1984).

SRT provides the scientific basis for practices such as tree hugging and forest bathing (shinrin-yoku), which have been widely studied in Japanese and international literature. Li (2010) demonstrated that two- or three-day stays in the forest significantly increase the activity of NK (natural killer) lymphocytes, with effects on immunity that persist for weeks after the experience.

Biophilia and ecopsychology

Biologist Edward O. Wilson (1984) introduced the concept of biophilia, defined as the innate tendency of humans to connect with other life forms. According to Wilson, this affiliation is not an acquired cultural preference, but a biologically rooted orientation, the result of millions of years of co-evolution between the human species and the living environment. The systematic suppression of this connection —typical of modern urban life— would therefore impoverish psychological well-being on a profound level.

Theodore Roszak (1992) expanded this perspective with the framework of ecopsychology, arguing that the boundary between the individual self and the natural environment is a cultural construction, not a primary psychological fact. The sense of separation from nature —which Roszak calls ecological dissociation— is thought to be at the origin of widespread forms of contemporary anxiety, alienation, and existential emptiness. Practices of reconnection with the environment (animal care, horticulture, immersion in nature) would therefore operate at a profound level of identity, restoring a sense of belonging and experiential continuity (Roszak, 1992).

Practical applications in the psychological and psychoeducational fields

Forest bathing and slow walking

Research on shinrin-yoku —literally "forest bath" — has documented a beneficial effect profile that includes reduced salivary cortisol, decreased state anxiety, and improved mood (Li, 2018; Park et al., 2010). Slow walking in a wooded environment differs from conventional exercise in its deliberately slowed pace and sensory attention to the details of the environment: bark textures, understory odors, and variations in light between canopies.

Integrating animals such as alpacas into these experiences adds a nonverbal relational dimension of considerable clinical interest. Shared care and walking with an animal require modulating one's rhythm and presence, promoting an attentional state similar to that described in mindfulness practices (Chandler, 2012). Contact with animals also stimulates the release of oxytocin, reducing anxiety and promoting a sense of secure connection (Beetz et al., 2012).

Forestry education and ecological awareness

Forestry education activities —plant identification, animal sound recognition, production of "seed bombs" — are based on a pedagogical principle known as learning through doing, which privileges embedded cognition located on the abstract transmission of content (Dewey, 1938, cited in Rickinson et al., 2004). Guided discovery of the natural environment activates curiosity, observational ability, and a sense of competence, with documented effects on self-efficacy and intrinsic motivation (Rickinson et al., 2004).

Studies conducted with populations of at-risk children and adolescents have shown that extended outdoor education programs produce significant improvements in social skills, emotional regulation, and self-esteem compared to control groups (Muñoz, 2009). Nature functions in these cases as a containing environment: devoid of the hierarchies and evaluative pressures typical of the school context, it offers a space in which error is normalized, and exploration is intrinsically rewarding.

Animal care and horticulture as therapeutic practices

Animal-assisted zootherapy and activities (AAA/TAA) are now recognized as effective complementary interventions in diverse clinical settings, from autism to depression, from dementia to post-traumatic stress disorder (Chandler, 2012; Fine, 2019). Caring for chickens, sheep, or rabbits requires interpreting nonverbal cues, calibrating one's emotional response, and maintaining a regulated presence-skills that transfer significantly to human relationships.

Therapeutic horticulture (horticultural therapy) has an established clinical history. Contact with the soil, sowing, care, and harvesting offer a concrete, measurable experience of personal effectiveness over time, with an intrinsic metaphor of growth and self-care (Sempik et al., 2010). Touch — stimulated by the manipulation of soil, seeds, leaves, bark — activates primitive sensory pathways associated with the regulation of the autonomic nervous system (Montagu, 1986).

Art workshops in a natural environment

The integration between the aesthetic experience of nature and artistic practices —painting, mosaic, ceramics, music— is based on research on art therapy and the symbolic function of creative expression (Malchiodi, 2012). Nature as the first inspirational element is not a romantic metaphor, but a functional condition: the sensory richness of the natural environment —colors, textures, sounds, movements — provides perceptual material that fuels the imagination and facilitates access to affective content that is difficult to verbalize.

Malchiodi (2012) emphasizes how artistic creation in natural contexts tends to reduce cognitive defenses, favoring a more spontaneous and authentic expressive modality. This effect is amplified by the state of attentional recovery and stress reduction produced by the natural environment itself (Kaplan & Kaplan, 1989), creating a synergy between context and activity that enhances the effectiveness of both.

Implications for psychological practice

The evidence summarized in this article supports the systematic integration of natural environments into psychological and psychoeducational practice. Several authors have proposed the concept of green care as a conceptual umbrella for a set of interventions — green exercise, ecotherapy, social agriculture, pet therapy — united by the use of nature as an active therapeutic component (Sempik et al., 2010; Bragg & Atkins, 2016).

Psychologists who intend to work in natural contexts must have a solid background in theoretical reference models and know how to select activities based on specific clinical objectives. The natural environment is not inherently therapeutic in an indiscriminate way: it becomes so when it is intentionally structured, accompanied by a competent professional relationship, and included in a coherent care project (Bragg & Atkins, 2016).

It is also recommended to carefully consider individual specificities: the response to nature is mediated by cultural, experiential, and clinical variables. For some people —particularly those who have experienced trauma in natural environments or those with particular sensory sensitivities — unguided exposure may be disorienting (Bratman et al., 2019).

Conclusions

Immersion in natural environments acts on multiple simultaneous levels: physiological (reduction of cortisol, regulation of the autonomic nervous system), cognitive (recovery of attention, reduction of mental fatigue), affective (improvement of mood, reduction of anxiety), and identity (sense of belonging, connection with the living). The theories of Kaplan and Kaplan (1989), Ulrich (1983; 1991), Wilson (1984), and Roszak (1992) together offer a multilevel explanatory framework that scientifically legitimizes long-undervalued therapeutic and educational practices.

The forest, the natural park, the vegetable garden, and the farm are not simply pleasant settings: they are low-sensory environments that foster authentic expression, the recovery of psychological resources, and the construction of a more integrated relationship with the self and the living world. Taking psychology outside the four walls of study does not mean abandoning clinical rigor, but enriching it with an ecological dimension that contemporary research can no longer ignore.

References 

Beetz, A., Uvnäs-Moberg, K., Julius, H., & Kotrschal, K. (2012). Psychosocial and psychophysiological effects of human-animal interactions: The possible role of oxytocin. Frontiers in Psychology, 3, 234. https://doi.org/10.3389/fpsyg.2012.00234

Bragg, R., & Atkins, G. (2016). A review of nature-based interventions for mental health care. Natural England Commissioned Reports, 204.

Bratman, G. N., Anderson, C. B., Berman, M. G., Cochran, B., de Vries, S., Flanders, J., Folke, C., Frumkin, H., Gross, J. J., Hartig, T., Kahn, P. H., Kuo, M., Lawler, J. J., Levin, P. S., Lindahl, T., Meyer-Lindenberg, A., Mitchell, R., Ouyang, Z., Roe, J., … Daily, G. C. (2019). Nature and mental health: An ecosystem service perspective. Science Advances, 5(7), eaax0903. https://doi.org/10.1126/sciadv.aax0903

Chandler, C. K. (2012). Animal assisted therapy in counseling (2nd ed.). Routledge.

Fine, A. H. (Ed.). (2019). Handbook on animal-assisted therapy: Foundations and guidelines for animal-assisted interventions (5th ed.). Academic Press.

Kaplan, R., & Kaplan, S. (1989). The experience of nature: A psychological perspective. Cambridge University Press.

Kaplan, S. (1995). The restorative benefits of nature: Toward an integrative framework. Journal of Environmental Psychology, 15(3), 169–182. https://doi.org/10.1016/0272-4944(95)90001-2

Li, Q. (2010). Effect of forest bathing trips on human immune function. Environmental Health and Preventive Medicine, 15(1), 9–17. https://doi.org/10.1007/s12199-008-0068-3

Li, Q. (2018). Shinrin-yoku: The art and science of forest bathing. Penguin Life.

Malchiodi, C. A. (Ed.). (2012). Handbook of art therapy (2nd ed.). Guilford Press.

Montagu, A. (1986). Touching: The human significance of the skin (3rd ed.). Harper & Row.

Muñoz, S. A. (2009). Children in the outdoors: A literature review. Sustainable Development Research Centre.

Park, B. J., Tsunetsugu, Y., Kasetani, T., Kagawa, T., & Miyazaki, Y. (2010). The physiological effects of Shinrin-yoku (taking in the forest atmosphere or forest bathing): Evidence from field experiments in 24 forests across Japan. Environmental Health and Preventive Medicine, 15(1), 18–26. https://doi.org/10.1007/s12199-009-0086-9

Rickinson, M., Dillon, J., Teamey, K., Morris, M., Choi, M. Y., Sanders, D., & Benefield, P. (2004). A review of research on outdoor learning. National Foundation for Educational Research.

Roszak, T. (1992). Voice of the earth: An exploration of ecopsychology. Phanes Press.

Sempik, J., Hine, R., & Wilcox, D. (Eds.). (2010). Green care: A conceptual framework. A report of the working group on the health benefits of green care. COST Action 866, Green Care in Agriculture.

Ulrich, R. S. (1983). Aesthetic and affective response to natural environment. In I. Altman & J. F. Wohlwill (Eds.), Behavior and the natural environment (Vol. 6, pp. 85–125). Plenum Press.

Ulrich, R. S. (1984). View through a window may influence recovery from surgery. Science, 224(4647), 420–421. https://doi.org/10.1126/science.6143402

Ulrich, R. S., Simons, R. F., Losito, B. D., Fiorito, E., Miles, M. A., & Zelson, M. (1991). Stress recovery during exposure to natural and urban environments. Journal of Environmental Psychology, 11(3), 201–230. https://doi.org/10.1016/S0272-4944(05)80184-7

White, M. P., Alcock, I., Grellier, J., Wheeler, B. W., Hartig, T., Warber, S. L., Bone, A., Depledge, M. H., & Fleming, L. E. (2019). Spending at least 120 minutes a week in nature is associated with good health and wellbeing. Scientific Reports, 9, 7730. https://doi.org/10.1038/s41598-019-44097-3

Wilson, E. O. (1984). Biophilia. Harvard University Press.