Executive Functioning in Preschoolers with ADHD: The Roles of Disruptive Behavior Disorders and Callous-Unemotional Behaviors.
OBJECTIVE To explore how comorbidities associated with attention-deficit/hyperactivity disorder (ADHD) during early childhood, such as disruptive behavior disorder (DBD) and/or the presence of callous-unemotional behaviors (CU), relate to executive functioning (EF). METHOD Participants were 323 young children (68.7%...