Date of Graduation

Summer 2011


Master of Science in Psychology



Committee Chair

Steve Capps


test variables of attention (TOVA), Conners' continuous performance task (CPT-II), attention deficity/hyperactivity disorder (ADHD), attention, concentration, continuous performance task, convergent validity

Subject Categories



The Test of Variables of Attention (TOVA) and the Conners' Continuous Performance Task (CPT-II) are two computerized assessments of attention utilized in the diagnosis of Attention-Deficit/Hyperactivity Disorder (ADHD). Both instruments purport to measure attentional problems related to ADHD, and compare their results to an ADHD and non-ADHD sample to determine the likelihood that an individual matches an ADHD profile. Both produce an overall score (for the TOVA, an ADHD score; for the Conners CPT, a clinical confidence index) and measure specific variables related to attentional problems. In the current study, overall scores and individual variables for both instruments were correlated to determine the degree of convergent validity between the two tests. The sample consisted of adults (18 years and older; n = 157) presenting for evaluation related to cognitive and/or psychological issues. Results indicate significant correlations for all variables measured (commission errors, omission errors, response time, and d') as well as the overall measure (ADHD score and clinical confidence index). An additional method of calculation of d' for both instruments was compared and determined to be statistically significant. Commission errors were found to be higher in the Conners CPT. Further research is needed to identify the exact relationship between the TOVA and Conners' CPT, and to what degree they correctly identify ADHD and non-ADHD individuals.


© Rachel Lynn Gartner

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