The Guardian 的專文 : Why our children need to get outside and engage with nature
自由且未經規劃組織(free and unstructured play)的戶外遊戲可以增進解決問題的技巧，提高專注力與自我約束力。
Moss( Stephen Moss, 博物學者, 廣播員 和 作家) 說：「大自然是個工具，不只能讓孩子體驗廣闊的世界，也能讓他們體驗自己。所以，從攀爬樹木的過程中來學習如何對自己負責，更重要的是學習如何為你自己拿捏冒險的分寸。從樹上摔落能讓孩子好好地上一堂冒險與收穫的課。」
Free and unstructured play in the outdoors boosts problem-solving skills, focus and self-discipline. Socially, it improves cooperation, flexibility, and self-awareness. Emotional benefits include reduced aggression and increased happiness. "Children will be smarter, better able to get along with others, healthier and happier when they have regular opportunities for free and unstructured play in the out-of-doors," concluded one authoritative study published by the American Medical Association in 2005.
"Nature is a tool," says Moss, "to get children to experience not just the wider world, but themselves." So climbing a tree, he says, is about "learning how to take responsibility for yourself, and how – crucially – to measure risk for yourself. Falling out of a tree is a very good lesson in risk and reward."