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Wasting the Restorative Potential: Influences of Plastic and Biowaste on Psychological Restoration After Real, Virtual, and Imagined Walks

2023 1 citation ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 40 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Claudia Menzel, Leonie von der Heiden, Imke Tretau, Pia Wissel

Summary

Researchers conducted three studies examining how plastic litter and biowaste in natural environments diminish the psychological restorative benefits of spending time in nature, finding that even imagined or virtually depicted litter reduced positive affect and perceived restoration. The findings highlight pollution as a threat not only to ecological health but also to human mental wellbeing.

Nature experiences benefit human wellbeing by, for example, increasing subjective restoration and positive affect while reducing negative affect. However, natural environments are threatened by several crises, including pollution. In three preregistered studies, one correlational and two experimental, we investigated the relationship between (plastic) litter and restoration after a walk. In Study 1, participants did a self-selected restorative walk and afterwards reported observed litter. In two experimental studies, we manipulated the presence of plastic waste, biowaste (which served as an active control condition with human-sourced but degradable litter), and no waste in a virtual (i.e., video; Study 2) and an imagined (Study 3) forest walk. In all studies, we assessed subjective restoration, current affect and connectedness to nature, attractiveness and preference of scenery, as well as plastic-related problem awareness, intentions, and policy support. Results showed that litter, especially from plastic, is associated with harmful changes in subjective restoration, affect, and the perception of the scenery. Connectedness to nature, as well as plastic-related problem awareness, intentions, and policy support were not affected by the presence of plastic. Thus, plastic pollution influences human wellbeing negatively, but did not affect factors important to reduce consumption. Therefore, more research on tackling the plastic crisis is needed.

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