The members of the Committee appointed to examine the dissertation of JULIA MARMION find it satisfactory and recommend that it be accepted. ___________________________________ Chair ___________________________________ ___________________________________ iii ACKNOWLEDGMENT I would like to thank my advisor Dr. Masha Gartstein for her support in completing this project, as well as her support thro...

This study investigates the degree to which internalizing disorders (anxiety and mood disorders) are prospectively associated with sick leave granted for mental and somatic disorders, and the extent to which common genetic and environmental risk factors influence these relationships. Data include self-reported symptoms of psychological distress from 7,598 young adult twins and diagnostic interv...

Background: Research on twin-singleton differences in externalizing and internalizing problems in childhood is largely cross-sectional and yields contrasting results. The goal of this study was to compare developmental trajectories of externalizing and internalizing problems in 6to 12-year-old twins and singletons. Methods: Child Behavior Checklist maternal reports of externalizing and internal...

There is a need for longitudinal research to understand how psychopathology relates to the onset and maintenance of substance use from adolescence into young adulthood. Hence, we investigate the longitudinal, reciprocal influences of internalizing (anxiety and depression) and externalizing (oppositional defiance) symptoms on heavy episodic drinking (HED; ≥5 drinks per occasion) and alcohol-rela...

Few studies have examined the effects of household change on adolescent development. We study household composition change and its effect on development, as measured by both internalizing symptoms and externalizing behaviors, in a sample of urban African American adolescents. Household change was defined based on the movement in or out of the household of one of the two most important adults ad...

Reward-related decision making was examined within a longitudinal study of 221 11-year-old boys, 50 of whom had current internalizing disorders. Participants completed a behavioral decision-making task involving varying probability and magnitude of obtaining reward. Concurrent internalizing but not externalizing diagnoses were related to reduced frequency of choosing the reward option with a la...

The present study analyzed rates of peer victimization in children with a chronic tic disorder as compared to children with type 1 diabetes and healthy controls. The associations among peer victimization, tic symptom severity, and psychological symptoms, as well as the potential mediating relationship between peer victimization, tic severity, and child internalizing symptoms, were also explored...

The longitudinal effects among self and identity processes, and between these processes and internalizing symptoms, are not well understood. As a result, the present study was designed to ascertain the over-time effects among identity commitment, reconsideration of commitments, and self-concept clarity, as well as to map the interplay of these self and identity processes with anxiety and depres...