Study Search Results Your query returned 3 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. Center for Research on Social Reality [Spain] Survey, May 1992: Old Age (ICPSR 9997) Centro de Investigaciones Sobre la Realidad Social (CIRES) 2. Detroit Area Study, 1993: Health and Aging (ICPSR 2839) Rodgers, Willard 3. Quality of American Life, 1971 (ICPSR 3508) Campbell, Angus; Converse, Philip E.; Rodgers, Willard L.