Attention-deficit/hyperactivity disorder (ADHD) is one of the most common, highly inheritable childhood-onset psychiatric disorders. Previous research indicated that individuals with ADHD may experience altered olfactory function, but the results were inconsistent. The present study compared odor identification and odor memory abilities between 51 children with ADHD and 51 healthy controls. Odor identification ability was assessed using the U-Sniff test, and odor memory ability was evaluated…