B) getting higher grades, reading more books, and placing more value on achievement
in high school.
C) above average IQ scores, advanced moral understanding, and resistance to peer
pressure in adolescence.
D) overweight and obesity, particularly for children who spend more than an hour a day
watching educational television.
Physical activity
A) improves mood, but decreases alertness.
B) reduces anxiety and depression.
C) increases the risk of diseases associated with smoking.
D) decreases neural activity in the cerebral cortex.
Which of the following statements about skipped-generation families is true?
A) The number of grandparents rearing grandchildren has decreased over the past two
decades.
B) Nearly 4 to 5 percent of the U.S. child population live with grandparents but apart
from parents.
C) Caucasian-American caregiving grandparents are especially likely to be unemployed
and to be caring for several grandchildren.
D) Grandparents in skipped-generation families report less fulfillment in the
grandparent role than typical grandparents do.