This study examined the structure, distribution, and correlates of a new measure of self-reported callous-unemotional (CU) traits in 1,443 adolescents (774 boys, 669 girls) between the ages of 13 to 18 years. The Inventory of Callous-Unemotional Traits was subjected to exploratory factor analysis and confirmatory factor analysis. Exploratory factor analysis produced three factors: callousness, uncaring, and unemotional. Fit indexes suggested that the three-factor model, with a single higher-order factor, represented a satisfactory solution for the data. This factor structure fits well for both boys and girls. CU traits correlated significantly with measures of conduct problems and psychosocial impairment. Furthermore, the traits showed predicted associations with sensation seeking and the Big Five personality dimensions, supporting the construct validity of the measure of CU traits.

Background There is ample evidence for female preponderance of major depressive disorder (MDD) in adolescence and adulthood. This study examined gender differences in the developmental course (i.e., incidence, duration, number of depressive episodes, and recovery rates) of MDD in non-referred adolescents and young adults. Methods Data from the Oregon Adolescent Depression Project were used to examine gender differences in the developmental course of MDD. Gender differences in the onset, duration, number of depressive episode and rate of recovery from MDD were examined in a population-based sample of the same individuals (participants: N = 773) during adolescence (age 14 to 17) and at age 30. Results Compared to males, females have higher incidence rates of MDD and had a more chronic course. Difference in duration of depressive episodes is marginally significant between male and female, with females having longer episodes. Lower onset age correlates significantly with more number of episodes in both genders; however, lower onset age predicts a worse course of depression only in females. Limitations The sample was from a single region of the country and consisted mostly of White adolescents. Conclusions Childhood depression may be a more serious risk factor for girls than for boys.

We examined the psychometric properties of a German translation of the Child Global Report version of the Alabama Parenting Questionnaire (APQ). A total of 1219 German school-children (644 boys and 575 girls), ages 10-14 years participated in the study. The APQ was subjected to exploratory and confirmatory factor analysis. Exploratory factor analysis produced five factors that were largely consistent with the a priori scale structure. These factors included dimensions of parental involvement, positive parenting, poor monitoring/supervision, inconsistent discipline, and corporal punishment. Fit indexes from confirmatory factor analyses suggested that the five factor model represented a satisfactory solution for the data, with some minor modifications in scale content. These findings provide initial support for the factorial validity of the child report version of the APQ in German families.

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