Data-Driven Profiles of Youth Executive Function and Their Longitudinal Associations With Externalizing Problems.

Area of Science:

• Neuroscience
• Developmental Psychology
• Psychiatry

Background:

• Executive function (EF) deficits are linked to externalizing disorders.
• Specificity of EF associations with externalizing symptom dimensions and risk for persistent problems requires further investigation.

Purpose of the Study:

• To investigate longitudinal relationships between EF domains (inhibitory control, working memory) and externalizing dimensions (hyperactivity, impulsivity, aggression) using unsupervised learning.
• To identify youth subgroups at risk for persistent problems based on EF and externalizing symptoms.

Main Methods:

• Utilized data from 5,501 youth in the Adolescent Brain Cognitive Development Study (T0-T3).
• Assessed EF using Stop Signal and Emotional N-Back tasks.
• Measured externalizing problems via Child Behavior Checklist (CBCL) and parent-report Kiddie Schedule for Affective Disorders and Schizophrenia.

Main Results:

• A 2-cluster solution (high EF vs. low EF) optimally fit the data at baseline (T0) and 2-year follow-up (T2).
• Lower EF group membership was stable over time (Cohen's k=0.41).
• Lower EF was significantly associated with increased attention problems (concurrently and longitudinally) and higher ADHD diagnoses, but not aggression or rule-breaking behaviors.

Conclusions:

• Findings suggest specific cognitive performance deficits in youth with attention problems.
• These deficits may inform the tailoring and development of personalized treatment and cognitive interventions for attention difficulties.