ArticlePsychiatry investigation2026
Effects of a Nature-Based Intervention on Cognitive Function in Older Adults With Mild Cognitive Impairment.
Article in Psychiatry investigation, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Abstract
objectiveMild cognitive impairment (MCI) represents a high-risk stage for dementia, yet limited non-pharmacological interventions are accessible. Although nature-based interventions have potential cognitive benefits, empirical validation for MCI populations remains limited. This study aims to address this gap.
methodsFifty older adults with MCI were recruited from a psychiatric outpatient clinic and local dementia centers. The intervention group included 25 participants who received a four-session nature-based intervention over 4 weeks, while controls, matched for age and sex, received no intervention. Pre- and post-tests assessed cognitive, emotional, physiological, and physical functions.
resultsMini-Mental State Examination (MMSE) scores demonstrated a significant time×group interaction [F(1,45)=10.226, p=0.003]. The nature-based intervention group showed that MMSE scores increased significantly (t=-2.270, p=0.034). In contrast, the control group exhibited a significant decline (t=2.262, p=0.034). No significant time and group interactions were found for emotional, physiological, or physical outcomes.
conclusionThis short-term, nature-based intervention yielded cognitive benefits in older adults with MCI, which supported its feasibility as an accessible, non-pharmacological intervention. Further longitudinal randomized controlled trials should confirm sustained effects across multiple domains.
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