Study Search Results Your query returned 5 results. Series results are grouped under the most relevant study. You can ungroup series results. Results per page: 25 50 100 Sort by: Title A-Z Released/Updated Time Period Most Cited in ICPSR Bib. Most Downloaded (?) Study Title/Investigator 1. ACTIVE (Advanced Cognitive Training for Independent and Vital Elderly), 1999-2001 [United States] (ICPSR 4248) Tennstedt, Sharon; Morris, John; Unverzagt, Frederick; et al. 2. Longitudinal Study of Generations, 1971, 1985, 1988, 1991, 1994, 1997, 2000 [California] (ICPSR 22100) Bengtson, Vern L. 3. National Health Interview Survey, 1986 (ICPSR 8976) United States Department of Health and Human Services. Centers for Disease Control and Prevention. National Center for Health Statistics 1 more results in National Health Interview Survey Series 4. The Survey of Health, Ageing and Retirement in Europe (SHARE) -- Israel, 2005-2006 (ICPSR 22160) Litwin, Howard 5. Survey of Midlife Development in Japan (MIDJA), April-September 2008 (ICPSR 30822) Ryff, Carol D.; Kitayam, Shinobu; Karasawa, Mayumi; et al.