The report says randomized trials of physical play in 7- to 9-year-olds showed enhanced attentional inhibition, cognitive flexibility, and brain functioning. It also supplies a 25% playtime decline specifically for 1981–1997.
From 1981 to 1997, children’s playtime decreased by 25%. Children 3 to 11 years of age have lost 12 hours per week of free time.
Clinical report
The report says randomized trials of physical play in 7- to 9-year-olds showed enhanced attentional inhibition, cognitive flexibility, and brain functioning. It also supplies a 25% playtime decline specifically for 1981–1997. Published in 2018, not 2019; the quoted cognitive findings concern physical play, not a generic “more free play” exposure measure.