Nature exposure and mental health

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Person standing in front of Swiss Alps Person standing in front of Swiss Alps.jpg
Person standing in front of Swiss Alps

Nature exposure and mental health refers to the association between an individual interacting with natural environments and its effect on the individual's mental health. Most studies consider any interaction with nature as exposure, such as a hike, being in a forest or a place with water (e.g. lake, beach), going on a walk in a park, etc. [1] Currently there is extensive research on the impact of the exposure to nature on people, which finds a beneficial association in various ways. Studies show that the contact of human beings with nature has decreased with the contemporary lifestyle of being most of the time indoors and with increasing time spent on screens. However, the interaction with nature has been considered to be a general health promoter thanks to the many benefits it brings to mental health and cognition as well. [2] As a consequence, therapists use nature in their treatments to improve mental or physical health. These treatments and techniques are called ecotherapy.

Contents

Mental health and emotional impact

Mental health has been defined as the state of mental well-being that enables people to cope with the stresses of life, realize their abilities, learn well and work well, and contribute to their community. [3] Research on the exposure to natural environments show that nature strengthens our mental health in multiple ways, such as lowering stress and improving mood. [4] Moreover, there is evidence that demonstrates that the contact with nature is associated with increases in happiness, subjective well-being, positive affect, positive social interactions and a sense of meaning and purpose in life, as well as decreases in mental distress. [4] A practical example of this are nature walks. These can increase brain activity in the subgenual prefrontal cortex, which becomes deactivated when a person is feeling anxious or depressed. [1]

Research shows that the mental health effects of nature are positive across all ages. [5] In regards to children, in Denmark there was a study done throughout eighteen years that analyzed the comparison between children ages 0–10 years old that lived in neighborhoods with more green space and children from lower levels of exposure to green space. It was found that the children from the higher level of green space had 55% less risk of developing multiple psychiatric disorders, such as depression, schizophrenia, substance disorder, eating disorders, and mood disorders. [6] Similarly, another study done in four European cities found that adults with low levels of exposure to outdoor environments in childhood had significantly worse mental health compared to adults with high levels of exposure to outdoor environments in childhood. [5] In addition, there are restorative effects from nature that support the mental health and well-being for the elderly. Studies show that the interaction of older adults with nature can be linked to better moods, decreased chance of depression, reduced stress levels and improved cognitive function. [7]

Cognitive impact

Cognition refers to all forms of knowing and awareness, such as perceiving, conceiving, remembering, reasoning, judging, imagining, and problem solving. [8] Thanks to both correlational and experimental research, a positive association has been found between the environment and cognitive abilities. [1] Some of the main benefits that studies have found are improvement on working memory performance, improved attention, cognitive flexibility, and attentional-control tasks. [1] In contrast, exposure to urban environments has been linked to attention deficits. [4]

Short periods of nature exposure can also cause cognitive benefits, including exposure just through images. [9] An attentional-control experiment made by Australian researchers asked college students to participate in a dull, attention-draining task in which they had to press a computer key when they saw certain numbers flash on the screen. Midway through the task participants had micro-breaks of 40 seconds in which they would see either a city scene with a flowering meadow green roof or a bare concrete roof. The participants that viewed the green roof made significantly less omission errors and showed more consistent responding to the task compared to participants who viewed the concrete roof according to the study. [9]

In addition to the exposure to images of nature, multiple experimental studies have used a wide range of stimulus types such as sounds and real world exposure. [1] These studies have compared participants’ cognitive performance after nature exposure in comparison with urban environments. [6] A significant impact that has been discovered consistently with natural environments is the improvement in working memory. This has been found persistently through a backward digital span task, in which participants are told to repeat sequences of numbers (which vary in length) in reverse order. Likewise, participants that had exposure to natural environments improved their performance. [1]

Related Research Articles

Cognitive psychology is the scientific study of mental processes such as attention, language use, memory, perception, problem solving, creativity, and reasoning.

In the field of psychology, cognitive dissonance is the perception of contradictory information and the mental toll of it. Relevant items of information include a person's actions, feelings, ideas, beliefs, values, and things in the environment. Cognitive dissonance is typically experienced as psychological stress when persons participate in an action that goes against one or more of those things. According to this theory, when two actions or ideas are not psychologically consistent with each other, people do all in their power to change them until they become consistent. The discomfort is triggered by the person's belief clashing with new information perceived, wherein the individual tries to find a way to resolve the contradiction to reduce their discomfort.

In psychology, a mood is an affective state. In contrast to emotions or feelings, moods are less specific, less intense and less likely to be provoked or instantiated by a particular stimulus or event. Moods are typically described as having either a positive or negative valence. In other words, people usually talk about being in a good mood or a bad mood. There are many different factors that influence mood, and these can lead to positive or negative effects on mood.

Environmental psychology is a branch of psychology that explores the relationship between humans and the external world. It examines the way in which the natural environment and our built environments shape us as individuals. Environmental psychology emphasizes how humans change the environment and how the environment changes humans' experiences and behaviors. The field defines the term environment broadly, encompassing natural environments, social settings, built environments, learning environments, and informational environments. According to an article on APA Psychnet, environmental psychology is when a person thinks of a plan, travels to a certain place, and follows through with the plan throughout their behavior.

<span class="mw-page-title-main">Affect (psychology)</span> Experience of feeling or emotion

Affect, in psychology, refers to the underlying experience of feeling, emotion, attachment, or mood. In psychology, "affect" refers to the experience of feeling or emotion. It encompasses a wide range of emotional states and can be positive or negative. Affect is a fundamental aspect of human experience and plays a central role in many psychological theories and studies. It can be understood as a combination of three components: emotion, mood, and affectivity. In psychology, the term "affect" is often used interchangeably with several related terms and concepts, though each term may have slightly different nuances. These terms encompass: emotion, feeling, mood, emotional state, sentiment, affective state, emotional response, affective reactivity, disposition. Researchers and psychologists may employ specific terms based on their focus and the context of their work.

Brain training is a program of regular activities purported to maintain or improve one's cognitive abilities. The phrase “cognitive ability” usually refers to components of fluid intelligence such as executive function and working memory. Cognitive training reflects a hypothesis that cognitive abilities can be maintained or improved by exercising the brain, analogous to the way physical fitness is improved by exercising the body. Cognitive training activities can take place in numerous modalities such as cardiovascular fitness training, playing online games or completing cognitive tasks in alignment with a training regimen, playing video games that require visuospatial reasoning, and engaging in novel activities such as dance, art, and music.

<span class="mw-page-title-main">Green exercise</span>

Green exercise refers to physical exercise undertaken in natural environments. Physical exercise is well known to provide physical and psychological health benefits. There is also good evidence that viewing, being in, and interacting with natural environments has positive effects, reducing stress and increasing the ability to cope with stress, reducing mental fatigue and improving concentration and cognitive function. The concept of Green exercise has therefore grown out of well-established areas such as the attention restoration theory within environmental psychology which have tended to focus on the psychological and physical effects of viewing nature and well-recognised work about the psychological benefits of physical exercise.

<span class="mw-page-title-main">Negative affectivity</span> Personality variable

Negative affectivity (NA), or negative affect, is a personality variable that involves the experience of negative emotions and poor self-concept. Negative affectivity subsumes a variety of negative emotions, including anger, contempt, disgust, guilt, fear, and nervousness. Low negative affectivity is characterized by frequent states of calmness and serenity, along with states of confidence, activeness, and great enthusiasm.

<span class="mw-page-title-main">Urban green space</span> Green area planned in an urban location

In land-use planning, urban green space is open-space areas reserved for parks and other "green spaces", including plant life, water features - also referred to as blue spaces - and other kinds of natural environment. Most urban open spaces are green spaces, but occasionally include other kinds of open areas. The landscape of urban open spaces can range from playing fields to highly maintained environments to relatively natural landscapes.

In psychology and neuroscience, executive dysfunction, or executive function deficit, is a disruption to the efficacy of the executive functions, which is a group of cognitive processes that regulate, control, and manage other cognitive processes. Executive dysfunction can refer to both neurocognitive deficits and behavioural symptoms. It is implicated in numerous psychopathologies and mental disorders, as well as short-term and long-term changes in non-clinical executive control.

Attention restoration theory (ART) asserts that people can concentrate better after spending time in nature, or even looking at scenes of nature. Natural environments abound with "soft fascinations" which a person can reflect upon in "effortless attention", such as clouds moving across the sky, leaves rustling in a breeze or water bubbling over rocks in a stream. Philosophically, nature has long been seen as a source of peace and energy, yet the scientific community started rigorous testing only as recently as the 1990s which has allowed scientific and accurate comments to be made about if nature has a restorative attribute.

<span class="mw-page-title-main">Memory improvement</span> Act of improving ones memory

Memory improvement is the act of enhancing one's memory. Research on improving memory is driven by amnesia, age-related memory loss, and people’s desire to enhance their memory. Research involved in memory improvement has also worked to determine what factors influence memory and cognition. There are many different techniques to improve memory some of which include cognitive training, psychopharmacology, diet, stress management, and exercise. Each technique can memory in different ways.

<span class="mw-page-title-main">Childhood memory</span> Early life experiences often memorable for life

Childhood memory refers to memories formed during childhood. Among its other roles, memory functions to guide present behaviour and to predict future outcomes. Memory in childhood is qualitatively and quantitatively different from the memories formed and retrieved in late adolescence and the adult years. Childhood memory research is relatively recent in relation to the study of other types of cognitive processes underpinning behaviour. Understanding the mechanisms by which memories in childhood are encoded and later retrieved has important implications in many areas. Research into childhood memory includes topics such as childhood memory formation and retrieval mechanisms in relation to those in adults, controversies surrounding infantile amnesia and the fact that adults have relatively poor memories of early childhood, the ways in which school environment and family environment influence memory, and the ways in which memory can be improved in childhood to improve overall cognition, performance in school, and well-being, both in childhood and in adulthood.

<span class="mw-page-title-main">Embodied cognition</span> Interdisciplinary theory

Embodied cognition is the concept suggesting that many features of cognition are shaped by the state and capacities of the organism. The cognitive features include a wide spectrum of cognitive functions, such as perception biases, memory recall, comprehension and high-level mental constructs and performance on various cognitive tasks. The bodily aspects involve the motor system, the perceptual system, the bodily interactions with the environment (situatedness), and the assumptions about the world built the functional structure of organism's brain and body.

<span class="mw-page-title-main">Nature connectedness</span>

Nature connectedness is the extent to which individuals include nature as part of their identity. It includes an understanding of nature and everything it is made up of, even the parts that are not pleasing. Characteristics of nature connectedness are similar to those of a personality trait: nature connectedness is stable over time and across various situations.

A cognitive vulnerability in cognitive psychology is an erroneous belief, cognitive bias, or pattern of thought that predisposes an individual to psychological problems. The vulnerability exists before the symptoms of a psychological disorder appear. After the individual encounters a stressful experience, the cognitive vulnerability shapes a maladaptive response that increases the likelihood of a psychological disorder.

Compassion-focused therapy (CFT) is a system of psychotherapy developed by Paul Gilbert that integrates techniques from cognitive behavioral therapy with concepts from evolutionary psychology, social psychology, developmental psychology, Buddhist psychology, and neuroscience. According to Gilbert, "One of its key concerns is to use compassionate mind training to help people develop and work with experiences of inner warmth, safeness and soothing, via compassion and self-compassion."

Nature therapy, sometimes referred to as ecotherapy, forest therapy, forest bathing, grounding, earthing, Shinrin-Yoku or Sami Lok, is a practice that describes a broad group of techniques or treatments using nature to improve mental or physical health.

Keith Stephen Dobson is a Canadian psychologist, academic and researcher. He is a professor of Clinical Psychology at the University of Calgary in Canada and has also served as Head of Psychology Department and Director of the Clinical Psychology program at the university. He is President of the World Confederation of Cognitive and Behavioral Therapies.

Social constraints are a psychological term that can be defined as "any social condition that causes a trauma survivor to feel unsupported, misunderstood, or otherwise alienated from their social network when they are seeking social support or attempting to express trauma-related thoughts, feelings, or concerns." Social constraints are most commonly defined as negative social interactions which make it difficult for an individual to speak about their traumatic experiences. The term is associated with the social-cognitive processing model, which is a psychological model describing ways in which individuals cope and come to terms with trauma they have experienced. Social constraints have been studied in populations of bereaved mothers, individuals diagnosed with cancer, and suicide-bereaved individuals. There is evidence of social constraints having negative effects on mental health. They have been linked to increased depressive symptoms as well as post-traumatic stress disorder symptoms in individuals who have experienced traumatic events. There seems to be a positive association between social constraints and negative cognitions related to traumatic events. Social constraints have also been linked to difficulties in coping with illness in people who have been diagnosed with terminal illness such as cancer.

References

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