Research on the origins of attention-deficit hyperactivity disorder (ADHD)indicates that
A)ADHD is highly heritable.
B)symptoms of ADHD usually appear in infancy.
C)the disorder is usually inherited from the mother's side of the family.
D)a stressful home life usually causes ADHD.

Question

Quizplus · Accepted Answer

Research has shown that ADHD is highly heritable, with genetics accounting for around 70-80% of the risk factors. Symptoms of ADHD usually appear in early childhood, around the age of 3-6 years old. While environmental factors such as stress or trauma can contribute to the severity of symptoms, they do not cause ADHD. There is no evidence to suggest that the disorder is usually inherited from the mother's side of the family.

Research on the Origins of Attention-Deficit Hyperactivity Disorder (ADHD)indicates That