Manifestations of insistence on sameness (IS) and circumscribed interests (CI) are complex, with individuals varying considerably, not only in the types of behaviours they express, but also in terms of a behaviour's frequency, intensity, trajectory, adaptive benefits, and impacts. However, current quantitative RRB instruments capture only certain…

Twin studies find ~20% of the variance in achievement in public examinations taken at age 16 in the United Kingdom can be explained by experiences not shared within families. Nonshared environmental (NSE) influences, including measurement error, explain why monozygotic (MZ) twins differ from each other. Such influences work independently of…

Despite broad consensus that most juvenile crimes are committed with peers, many questions regarding developmental and individual differences in criminal style (i.e., co-offending vs. solo offending) remain unanswered. Using prospective 3-year longitudinal data from 937 14- to 17-year-old serious male offenders, the present study investigates…

Interrelationships between patterns of drug abuse and personality and motivation were determined for male and female subjects. Significant sex differences were found with respect to drug behavior. Females used amphetamines more frequently than males and also showed greater multiple drug use. (Author)

Patterns of juvenile criminal activity were investigated with respect to differences in a range of demographic, family and individual variables. Discriminant function analyses were used to assess the discriminating power of the variables across crime categories, crime subcategories, number of prior referrals, and grade level. (Author/ABB)

Examined the personal, situational, and contextual correlates of coping in 315 adolescents. Found that adolescents who used more approach-coping responses were older, more active, and appraised stressful events as controllable and as challenges, whereas adolescents who used more avoidance coping were easily distressed, had more chronic stressors,…

Studied the risk-taking behavior (i.e., smoking, intemperate drinking, and failure to fasten seat belts) of 4,539 Canadian adolescents. Results showed adolescents who lived in intact families engaged in less health-risk behavior than adolescents from separated or divorced families. Results from widowed families were mixed. (JAC)

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)

Discusses adolescent depression, suicide and parasuicidal behavior and suggests that these behaviors appear in a predetermined sequence. Uses a developmental perspective to weave together two patterns: identity formation, and a three-phase process of adolescent maturation specific to each individual. Attempts to integrate clinical findings and…

Research in the area of social cognition has suggesed that actual stimuli don't predict later judgments and responses as well as cognitive representations of and cognitive responses to those stimuli, in the form of attitudes, impressions, or causal attributions. To identify the factors most important in predicting adolescent smoking, a 4-year…

The authors have developed a bibliography related to key issues in adolescent sexuality. Included are the following topics: (1) biological basis of sexuality; (2) adolescent sexual behavior; (3) homosexuality; (4) contraception and contraceptive behavior; (5) venereal disease; (6) morals; (7) abortion; (8) historical or anthropological view; (9)…

A typology of adolescent media uses is presented, discussing five uses--entertainment, identity formation, high sensation, coping, and youth culture identification--in relation to adolescent socialization. Media differ from other socializing agents in that adolescents have greater control over their media choices, resulting in substantial…