He is a past president of the National Academy of Neuropsychology, APA Division 5 (Evaluation, Measurement, and Statistics), APA Division 40 (Clinical Neuropsychology), and APA Div.
He was previously the president of the National Academy of Neuropsychology, APA Division 5 (Evaluation, Measurement, and Statistics), APA Division 40 (Clinical Neuropsychology), and APA Division.