This study compared the "Digit Naming Speed Test" (DNS) performance of 20 children with Attention-Deficit/Hyperactivity Disorder (ADHD) to 20 carefully matched peers without ADHD. Matching variables included age, grade, gender, and word reading ability. Sample construction included procedures that allowed for the identification and removal from the sample those children with reading disabilities (RD) and those children with ADHD who had predominantly hyperactive symptoms. Despite similar word identification and word attack test scores, contrary to previous research, and contrary to the researchers' expectations, children with ADHD were significantly slower at naming numbers than were children without ADHD. Explanations for these findings, theoretical and practical implications, and limitations and future study are discussed. (Contains 2 tables.)