B – 99 Visual Memory Differences Between ADHD Inattentive and Hyperactive Subtypes on the WRAML Picture Memory Task

Abstract Objective This study examines the differences in visual memory performance between children diagnosed with ADHD Inattentive (ADHD-I) and ADHD Hyperactive (ADHD-H) subtypes using the WRAML Picture Memory subtest. Method Data were selected from a de-identified child outpatient neuropsychological database at the Neuropsychology Assessment Center (NAC) at Nova Southeastern University. The sample consisted of children diagnosed with ADHD-Inattentive (N = 24) and ADHD-Hyperactive (N = 16). The total sample was 65% male and 35% female. Racial distribution included 65% White, 25% Black, and 10% LatinX. The mean education level of the sample was 3.78 years, and the mean age was 9.4 years. Using secondary data analysis, an independent samples t-test was conducted to compare WRAML Picture Memory scaled scores between groups. Effect size (Cohen’s d) and statistical power were also calculated. Results Children with ADHD-Hyperactive demonstrated significantly higher scores on the WRAML Picture Memory task (M = 12.31, SD = 3.03) compared to those with ADHD-Inattentive (M = 8.75, SD = 2.95), t(38) = -3.68, p = .000854. This difference showed a large effect size (Cohen’s d = 1.19) and high statistical power (0.95). Conclusion Findings suggest that children with the ADHD-Hyperactive subtype may exhibit relative strengths in visual memory compared to those with the Inattentive subtype. This distinction highlights the importance of differentiating ADHD subtypes during assessment to guide effective clinical intervention. Children with the Inattentive subtype may benefit from targeted support to improve visual memory. These results underscore the value of visual memory measures in neuropsychological evaluations to inform accommodations and treatment plans.