Growth Trajectories of Neurocognitive Self-Regulation and Adolescent Adjustment

• Main Author: Brieant, Alexis E.
• Other Authors: Psychology
• Format: Others
• Language: en
• Published: Virginia Tech 2018
• Subjects: adolescence; executive functioning; symptomatology
• Online Access: http://hdl.handle.net/10919/82232

Adolescence is a period of social, physical, and neurobiological transitions that may leave individuals more vulnerable to the development of adjustment problems such as internalizing and externalizing symptomatology. Extant research demonstrates how self-regulation can predict adjustment outcomes in adolescence; however, it has yet to be examined how longitudinal growth in self-regulation may predict individual differences in symptomatology. That is, adolescents who develop self-regulatory capacities such as executive functioning (EF; including shifting, working memory, and inhibitory control) more slowly than their peers may be at increased risk for maladjustment. Data were collected from 167 adolescents and their primary caregiver over approximately three years. At each time point, adolescents completed three behavioral tasks that capture the underlying dimensions of EF, and both adolescents and their primary caregiver completed measures of adolescent symptomatology. Parallel process growth curve modeling was used to test the associations between initial levels and trajectories of both EF and adjustment. Results did not reveal any significant associations between initial levels of EF and adjustment or between growth in EF and growth in adjustment. Furthermore, there were no differential associations between the different EF dimensions. However, post-hoc analyses revealed that longitudinal increases in growth of EF predicted lower externalizing (but not internalizing) symptomatology at Time 3 (controlling for Time 1). Findings suggest that those with more rapid EF development may be better able to regulate behavioral and affective states and thus be less likely to develop externalizing symptoms, and that both early levels and growth in EF may be important predictors of adolescent outcomes. === Master of Science === Adolescence is a period of social, physical, and neurobiological transitions that may leave individuals more vulnerable to the development of symptoms such as anxiety, depression, aggression, and delinquency. Self-regulation affects these outcomes in adolescence; however, individuals demonstrate growth in self-regulation abilities at different rates. Thus, the current study sought to examine how differences in self-regulation (specifically, executive functioning (EF)) development over time may contribute to different behavioral and emotional symptoms in adolescence. Data were collected from 167 adolescents and their primary caregiver over approximately three years. At each time point, adolescents completed three behavioral tasks that capture EF, and both adolescents and their primary caregiver completed measures of adolescent symptoms. Results showed that there were no significant associations between initial levels of EF and symptoms, or between growth in EF and growth in symptoms. Furthermore, different aspects of EF (such as memory, attention, and inhibitory control) did not differentially predict symptomatology. However, additional analyses revealed that increases in growth of EF over time predicted lower symptoms of aggression and delinquency at Time 3. Findings suggest that those with more rapid EF development may be better able to regulate behavioral and emotional states and thus be less likely to develop these types of symptoms, and that both early levels and growth in EF may be important predictors of adolescent outcomes.