In the United States as well as in other Western countries, the majority of emerging adults remain in their parents' home until marriage

Which of the following is a similarity between intellectual disabilities and autism spectrum disorders?

a. Both begin late in life. b. Each leads to difficulties within a narrow range of life functioning. c. Academic aptitude is impaired with both. d. Both are initially a shock to parents.

Advances in which of the following fields has been of primary importance in helping researchers understand that brain development during adolescence is much more dramatic than had previously been thought?

a. human nutrition b. genetic counseling c. self-monitoring research d. magnetic resonance imaging