Data on problem solving collected within the framework of G. Eckblad's cognitive theory of affect (1981) are analyzed with 3-mode principal component analysis. Eight tasks with 6 judgment scales were completed by 32 13-year-old boys. The effectiveness of the TUCKALS principal components analysis method is discussed. (SLD)

Latent growth curve analysis was used to study individual differences in initial status and growth rates of antisocial behavior, delinquent peer association, and unsupervised wandering during the transition to early adolescence for 206 European American boys. Findings are discussed in terms of the trait-confluence model for peer influence. (SLD)

Data gathered over 17 years was used to assess 36 childhood risk factors for personality disorder in young adults (original sample of 776 children). Prediction was shown to be better for girls than boys, and for girls, better over a younger age span. Effects of individual risks are explored. (SLD)