In 1994–1997, spouses/partners (1430 females, M=43.5 years; 2384 males, M=48.5 years, [32]) of an older twin cohort (“1981 Cohort”, [33]) completed a telephone diagnostic interview. The same assessments used with the “1989 Twin Cohort” were used with this spouse sample, allowing for examination of the consistency of factor loadings in a somewhat older sample. A subset of individuals from the spouse cohort (n=665) completed a second interview in 2003–2005 for one of several coordinated studies, allowing for estimation of the long-term stability of the measures. Data from respondents targeted for a general population study of large sibships (n=5485, including n=264 previously interviewed spouses) were used to estimate factor scoring coefficients which were then applied to an additional n=401 spouses who completed a second interview for one of two non-population-based studies (35).
