A brain imaging study showed that, in healthy children, peak cortical thickness occurred around the age of 7.5 years, and in children with ADHD, on average around 10.5 years. This finding implies that children with ADHD ____.
a. can be expected to lag behind their same-age peers in some tasks but will eventually experience improvement
b. will never be as intelligent as their same-age peers
c. can be expected to go through puberty approximately 3 years behind their same-age peers
d. will never catch up with their same-age peers
Question 2
Which of the following statements is true regarding attention deficit hyperactivity disorder (ADHD)?
a. The highest prevalence rates are in the Southwest.
b. Regional discrepancies might represent the DSMs varying diagnostic criteria for different parts of the country.
c. Regional discrepancies might be associated with low socioeconomic status, which is considered a risk factor.
d. The highest prevalence rates are in the Northeast.
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