Although early studies of executive functioning in children supported Miyake et al.'s (2000) three-factor model, more recent findings supported a variety of undifferentiated or two-factor structures. Using a cohort-sequential design, this study examined whether there were age-related differences in the structure of executive functioning among…

Adolescent adjustment measures may be related to each other and to the social environment in various ways. Are these relationships similar in genetic and environmental sources of covariation, or different? A multivariate behaviorgenetic analysis was made of 6 adjustment and 3 treatment composites from the study Nonshared Environment in Adolescent…

Examined factor structure of the emotional Autonomy Scale (EAS) in 3 samples of adolescents, with each sample consisting of 3 racial/ethnic groups. Found that the EAS exhibited poor construct validity and behaved quite differently for different grade and ethnic groups. Suggested that the most credible solution may be to reexamine the conceptual…