Children with ADHD
A) tend to score higher than other children on intelligence tests.
B) are often asymptomatic before age 7.
C) find it hard to ignore irrelevant stimuli.
D) have no difficulty with planning or reasoning.

Question

Quizplus · Accepted Answer

One of the key symptoms of ADHD is difficulty in inhibiting or ignoring irrelevant stimuli, which can lead to distractibility, impulsivity and hyperactivity.

Answer: B 
 Children with ADHD usually display symptoms before the age of 7, which is one of the criteria for diagnosis according to the DSM-5.

Therefore, the correct answer is:
Answer: C, B