Hypothesis
Access to parks, other natural space and a private garden should bend the trajectory of children’s social, emotional and behavioural development.
What failed
In 2909 urban Scottish children followed from age 4, modelling interactions of park area, total natural space and garden access with age and age squared gave little evidence of any influence on the trajectory of difficulty scores between 4 and 6, even though cross-sectional associations with garden access and natural space were present.
Broken assumption
Greenspace keeps improving children’s development over the period measured.
Why
The authors suggest any beneficial influence had already taken effect at younger ages than the window observed.
From the published paper: Richardson et al. Environmental Research, 2017. ↗CC BY