Date of Award

Winter 2009

Document Type


Degree Name

Doctor of Psychology (PsyD)




Virginia Consortium Program in Clinical Psychology

Committee Director

J. D. Ball

Committee Member

Desideria S. Hacker

Committee Member

Richard Handel

Committee Member

Kathrin Hartmann

Committee Member

Michael L. Stutts


Diagnosis of attention-deficit/hyperactivity disorder (ADHD) is a challenging practice with no definitive diagnostic test. This study sought to evaluate the use of a pattern of performance method of inference in ADHD assessment that examines an individual's general intellectual ability in comparison to his or her own attention skills. WISC-IV scores, IVA+Plus quotients, and basic demographic information were collected from patient files of children previously evaluated by the Eastern Virginia Medical School Neuropsychology Clinic. Children with and without ADHD were compared by analyzing the following difference or delta score discrepancies: (a) WISC-IV General Ability Index (GAI) minus WISC-IV Working Memory Index, (b) WISC-IV GAI minus WISC-IV Processing Speed Index, (c) WISC-IV GAI minus IVA+plus Full Scale Response Control Quotient, and (d) WISC-IV GAI minus IVA+plus Full Scale Attention Quotient. Contrary to preliminary hypotheses, analyses demonstrated no significant utility for the use of these delta scores in distinguishing children referred for psychological testing with and without ADHD. Potential reasons for this lack of predicted discriminate ability are posited.


A Dissertation Submitted to the Faculties of The College of William and Mary, Eastern Virginia Medical School, Norfolk State University, Old Dominion University in Partial Fulfillment of the Requirements for the Degree of Doctor of Psychology in Clinical Psychology through the Virginia Consortium Program in Clinical Psychology.