For better controlled research on the effects of green spaces have a look at Ming Kuo's work. E.g. https://www.researchgate.net/publication/245234610_Aggression

For better controlled research on the effects of green spaces have a look at Ming Kuo's work. E.g. https://www.researchgate.net/publication/245234610_Aggression_and_Violence_in_the_Inner_City https://www.researchgate.net/publication/245234610_Aggressio...