External Validation of Bifactor Model of ADHD: Explaining Heterogeneity in Psychiatric Comorbidity,Cognitive Control,and Personality Trait Profiles Within DSM-IV ADHD |
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| Authors: | Michelle M Martel Bethan Roberts Monica Gremillion Alexander von Eye Joel T Nigg |
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| Institution: | (1) Psychology Department, University of New Orleans, 2005 Geology & Psychology Building, 2000 Lakeshore Drive, New Orleans, LA 70148, USA;(2) Psychology Department, Michigan State University, East Lansing, USA;(3) Psychiatry Department, Oregon Health and Science University, Oregon, USA |
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| Abstract: | The current paper provides external validation of the bifactor model of ADHD by examining associations between ADHD latent
factor/profile scores and external validation indices. 548 children (321 boys; 302 with ADHD), 6 to 18 years old, recruited
from the community participated in a comprehensive diagnostic procedure. Mothers completed the Child Behavior Checklist, Early
Adolescent Temperament Questionnaire, and California Q-Sort. Children completed the Stop and Trail-Making Task. Specific inattention
was associated with depression/withdrawal, slower cognitive task performance, introversion, agreeableness, and high reactive
control; specific hyperactivity-impulsivity was associated with rule-breaking/aggressive behavior, social problems, errors
during set-shifting, extraversion, disagreeableness, and low reactive control. It is concluded that the bifactor model provides
better explanation of heterogeneity within ADHD than DSM-IV ADHD symptom counts or subtypes. |
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