Validation of the AQT Color–Form Additive Model for Screening and Monitoring Pharmacological Treatment of ADHD

Abstract

Objective:This retrospective study used A Quick Test of Cognitive Speed (AQT) processing-speed and efficiency measures for evaluating sensitivity and monitoring effects during pharmacological treatment of adults with ADHD. Method: Color (C), form (F), and color–form (CF) combination naming were administered to 69 adults during outpatient evaluation, and pre- and posttreatment results were compared for 64 adults. Results: At intake without medication, naming times (s) were significantly longer and overhead, CF − (C + F), larger than after stabilization of ADHD symptoms. Means for single-dimension naming were in the normal range, and for CF and overhead, means were in the atypical ranges. After treatment, CF and overhead improved to within normal ranges. On average, dual-dimension processing speed increased by 31% and efficiency by 73%. Sensitivity at intake was 91%, using fail-criteria for CF and/or overhead. Conclusion: Results support previous estimates of sensitivity and ability to monitor pharmacological-treatment effects in ADHD.