Intellectual and physical activities, but not social activities, are associated with better global cognition: a multi-site evaluation of the cognition and lifestyle activity study for seniors in Asia (CLASSA)
https://www.ncbi.nlm.nih.gov/pubmed/26271049
Age Ageing. 2015 Sep;44(5):835-40. doi: 10.1093/ageing/afv099. Epub 2015 Aug 12.
PMID:26271049DOI:10.1093/ageing/afv099