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Kevin J. Grimm

University of California, Davis



Family Data

Intergenerational Studies – Family Data

Parents of Original Subjects

GS and BGS parents were interviewed in 1969-71 when they averaged 70 years of age (N = 142) and in 1981-83 when their mean age was 83 years (N = 94). They took the WAIS as part of the first of these waves of data collection.


Spouses of subjects in all three studies have been recruited into the IGS. Approximately 70 GS spouses participated in data collection in the 1960s. In the 1970s, 149 GS and OGS spouses participated in data collection. In the 1980s, 162 spouses from all studies participated in data collection. The spouses have not just provided data about the subjects and their lives together, but have been participants in their own right. In fact, the data collected in the 1970s and 1980s are virtually the same as those provided by the subjects.


Children of subjects in all three studies also have participated in the longitudinal research at IHD. Offspring of the BGS subjects were studied longitudinally at 6- to 12-month intervals from 6 months through 18 years with assessments roughly paralleling those of their parents. GS Offspring participated in the first two adult follow-ups (1960s, 1970s). In the measurement occasions health, anthropometric, personality, intelligence, and educational data were collected. OGS offspring took the Stanford-Binet in the mid 1950s. They also were seen in the 1970s when they underwent IQ testing and, if they were between the ages of 14 and 18, they were interviewed and completed questionnaires. In 1991, more than 370 adult offspring from all samples (over 75% of those for whom addresses were available) returned questionnaires reporting on their careers, marriages, children, and relationships with their parents.