Kelsey, age 10, is impulsive. During school, he drops his pencil, rearranges the papers inside his desk, and yells at people across the room. Kelsey fails to follow the rules when he plays games and lashes out with hostility when he is frustrated. He suffers from both academic and social problems. Kelsey most likely has
A) Down syndrome.
B) an anxiety disorder.
C) autism.
D) attention-deficit hyperactivity disorder (ADHD).

Question

Quizplus · Accepted Answer

Kelsey's impulsive behavior, difficulty following rules, and academic and social problems are all characteristic symptoms of ADHD. Down syndrome and autism typically involve different sets of symptoms, while an anxiety disorder may involve anxiety and worry that are not evident in Kelsey's behavior.

Kelsey, Age 10, Is Impulsive