“Insights on Activity in Later Life from the Life & Times in an Aging Society Study-Engaged as We Age,” by Jacquelyn B. James, Elyssa Besen, Christina Matz-Costa, and Marcie Pitt-Catsouphes (January 2012, .pdf format, 19p.).
www.bc.edu/research/agingandwork/archive_pubs/EAWA_JustDoIt.html
