04/11/2026
Several scientific studies, systematic reviews, and meta-analyses demonstrate that increased time spent outdoors (in green or natural spaces) is associated with improved outcomes in children's brain/cognitive development (e.g., attention, memory, executive function, and reduced ADHD symptoms) and physical development (particularly vision via myopia prevention, plus broader benefits from physical activity like motor skills, bone health via vitamin D synthesis, and cardiovascular fitness).
There is supportive evidence from longitudinal studies, experimental designs, systematic reviews, and some controlled comparisons showing benefits for brain/cognitive development (e.g., attention, working memory/executive function, self-regulation) in children aged 3–6 when they spend more time outdoors in nature or participate in nature-based/forest preschool programs.
There are several peer-reviewed studies and systematic reviews providing evidence (including from randomized controlled trials and controlled comparisons) that children aged 6–12 show cognitive/brain development benefits (e.g., improved attention, working memory, and engagement) and higher retention of learned academic material when lessons are conducted outdoors in natural settings, compared to matched indoor classroom instruction.
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Residential green space in childhood is associated with lower risk of psychiatric disorders from adolescence into adulthood | PNAS https://share.google/Zh9L3LorbGKDpCWJL