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Spady's hypothesis that level of participation in high school extracurricular activities has a lagged effect on educational attainment is tested on a sample of 17-year-old Lenawee County, Michigan, males studied in 1957 and again in 1972 (N=340). The hypothesis is extended to estimate a model of the effects of adolescent social integration on occupation, income, and adult social integration. The major finding with respect to occupation and income is that incorporating adolescent social integration enhances the predictive power of the models only marginally, but such integration functions as an important mediator in the process whereby background socioeconomic status is transmitted to sons. Adolescent social integration is a strong predictor of adult social integration, and an estimate is made of the stability of the social integration constuct over a 15-year interval. Analysis is by multiple regression based on correlations corrected for unreliability, a strategy relating measured variables to their latent constructs so as to make explicit the differential reliability among indicators and the bearing of validity on causal systems.
Luther B. Otto (Sat,) studied this question.