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: Study Relevance Title A-Z Released/Updated Time Period Most Cited in ICPSR Bib. Variable Relevance 1. Norwegian Life History Study, 1971 (ICPSR 8545) Ramsoy, Natalie Rogoff; Skrede, Kari 2. United States Microdata Samples Extract File, 1940-1980: Demographics of Aging (ICPSR 8353) Inter-university Consortium for Political and Social Research 3. Terman Life-Cycle Study of Children with High Ability, 1922-1991 (ICPSR 8092) Terman, Lewis M., et al.