According to the text, people in which of the following age groups generally takes on the role of family kinkeeper?

According to the text, approximately what percentage of adolescents reported using a contraceptive during the first time they had sex?

A. About 70% B. About 80% C. About 60% D. About 90%

As you walk into an elevator, you notice the powerful scent of perfume left behind by someone who has just exited. By the time you reach your floor, you find that you hardly notice the smell anymore. What phenomenon is at work?

a) sensory adaptation b) transduction c) absolute threshold d) Weber’s law