Search Results Use the search box below to revise your search, or start a new search. Studies (3) Variables Publications Your query returned 3 studies. Series results are grouped under the most relevant study. Ungroup series results to view all results. Sort by: Title A-Z Released/Updated Time Period Most Cited in ICPSR Bib. 1. Chinese Longitudinal Healthy Longevity Survey (CLHLS), 1998-2012 (ICPSR 36179) Zeng, Yi; Vaupel, James; Xiao, Zhenyu; et al. 2. Longitudinal Study of Generations, 1971, 1985, 1988, 1991, 1994, 1997, 2000, 2005 [California] (ICPSR 22100) Silverstein, Merril; Bengtson, Vern L. 3. Survey of Midlife Development in Japan (MIDJA 2), May-October 2012 (ICPSR 36427) Ryff, Carol D.; Kitayama, Shinobu; Karasawa, Mayumi; et al.