Cronbach’s alphas for each scale were as follows(age 52 alpha reported first, age 62 alpha reported second, and correlations between Time 1 and Time 2 scores reported third): Extraversion, Agreeableness, Conscientiousness, Neuroticism, and Openness to Experience.
As discussed in the Participants and Procedure section, 57% of the participants who completed surveys in 1995 returned surveys in 2005(81 out of 141 possible participants). A between-subjects t test was used to examine attrition bias on the two main variables of authoritarianism did not differ between the two groups, t(131)= 0.98, ns.Generativity, however, did show a difference.