Psychometric properties of the Barkley Adult Attention Deficit Hyperactivity Disorder Rating Scale-IV in the Korean population

Discriminating attention-related symptoms is a key factor for the appropriate diagnosis of attention deficit hyperactivity disorder (ADHD) and sluggish cognitive tempo (SCT). The Barkley Adult Attention Deficit Hyperactivity Disorder Rating Scale-IV (BAARS-IV) is the most widely used tool to measure such symptoms. This study investigated the psychometric properties of the BAARS-IV with a sample of 771 participants in the Korean population. We identified a five-factor model for measuring ADHD and SCT, and determined the scale was appropriate for use in the Korean population. Sustained attention (SA) was a unique factor of the Korean version of the BAARS-IV. Internal consistency was good and the positive association between the BAARS-IV and an alternative measure of depression/anxiety supported the scale’s concurrent validity. To conclude, a cautious approach is needed when applying the BAARS-IV in different cultural contexts.