“ Studies have also shown green play settings can significantly reduce stress levels and improve attention and concentration in children suffering from attention-deficit disorder (Taylor and Kuo 2009; Taylor, Kuo and Sullivan 2001). As Kellert (2005, 88) noted, “the ultimate raw material for much of human intellect, emotion, personality, industry, and spirit is rooted in a healthy, accessible, and abundant natural environment.” A nice quote (with another quote) showing how play settings (recreation and parks) help reduce stress, especially for those with ADHD. Somewhat usable (revisit).