--- - |2 Abstract The purpose of this study was to cross‐validate scales and subscales of the Personality Assessment Inventory (PAI) identified in previously published research against criterion variables for the identification of Attention Deficit/Hyperactivity Disorder (ADHD) in adults. Performance‐based indicators of attention deficits from the Wechsler Adult Intelligence Scale—Fourth Edition were used as criterion variables. In a hierarchical logistic regression analysis, the addition of the PAI scales to the criterion variables did significantly improve the fit of the model, with an overall classification accuracy of 75%. Limitations of this study and implications for future research are discussed. - Journal of Clinical Psychology, EarlyView.