For girls, breasts begin to enlarge during the 10th year. The breasts typically reach full size in about three years, but the mammary glands do not mature fully until
a. age 16.
b. menstruation begins.
c. a woman has a baby.
d. a woman is in her late 50s.
c
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Fear of being in a place or situation from which escape is difficult or impossible if something should go wrong is called __________.
A. agoraphobia B. a social phobia C. a specific phobia D. heliophobia
Eva is about to become a teenage mother. Based on recent research, she and her child will better handle the situation if her parents
assume care for Eva and her child. adopt Eva's child and raise the child as their own. encourage Eva to move out of the house to raise her baby alone. are supportive but do not assume complete care for her child.
The Gondeks are having a baby. If there are no unusual circumstances, their baby's genetic sex will be determined by
A. an X or Y chromosome supplied by the mother. B. an X or Y chromosome supplied by the father. C. X or Y chromosomes supplied by the mother and by the father. D. all 46 chromosomes received from both parents.
What is a condition of the Premack principle?
a. The reinforcer must be desirable. b. The reinforcer must be similar to the behavior. c. The reinforcer must be something you might choose to do often. d. The principle is useful when there are consummatory behaviors.