Berman et al report in Psychological Science (December, 2008) that walks in the woods enhance people's ability to perform memory-related tasks. This study describes randomized comparative experiments conducted between groups who walked through an arboretum and others walking in an urban setting. Those who walked in the woods after learning to perform a certain memory task showed significant improvement. Those who walked through the city showed none. A second experiment had participants view pictures of nature or city settings instead of walking, with the same results: significant improvement for those who viewed nature pics, none for those who viewed urban scenes.
The study contains results from t-tests and ANOVA tests. A synopsis of the study can be viewed at http://www.sciencedaily.com/releases/2008/12/081218122242.htm.
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