Social skills are dynamic developmental constructs typically measured using assessments developed via cross-sectional methods. The measurement model of derivatives (MMOD), a factor analytic approach targeting individual growth trajectories, was used to evaluate the longitudinal factor structure of the Social Skills Improvement System--Rating…

The Pittsburgh Adjustment Survey Scales were developed to meet the need for the objective evaluation of the social behavior of elementary school-age boys using the observations of classroom teachers. An initial item pool was reduced to 94 items by an extreme-group procedure (202 subjects). A factor analysis (209 subjects) of the inventory resulted…

Used new administration procedure of Self Description Questionnaire to assess dimensions of young children's self-concept in a multicohort-multioccasion study. Found that the scale's reliability and stability improved with age and from one year to the next. Gender differences were stable over age. Time 1 teacher ratings contributed to the…