Escuteiros e guias (resiliência) e saúde mental anos mais tarde?

http://www.telegraph.co.uk/science/2016/11/10/scouts-and-guides-grow-up-to-have-better-mental-health/
Citando:
"On average, scouts and guides were 15 per cent less likely to have developed mental illness or depression by middle age, even those from poorer backgrounds whose initial risk was higher. "