Researchers found that compared to school districts that retained their early start times, school districts that made school start times a half-hour later than the usual time (e.g., 8:30 AM instead of 8:00 AM),
a. had paradoxically more teens oversleeping and then rushing to school late.
b. had a higher rate of depression among teens.
c. had a lower rate of driving accidents by teens on school days.
d. did not have a lower rate of problems among teens on any variable.
Question 2Each of these environmental factors appears to worsen the sleep/wake shift except
a. starting school earlier in middle and high school than in elementary school.
b. abuse of melatonin supplements by teens.
c. staring at lighted screens (TVs, computers, video games, and cell phones) late at night.
d. greater autonomy over their bedtimes granted to teens by their parents.
Question 3Puberty appears to have two effects, ________________the circadian cycle and ________________ the accumulation of sleep pressure by the homeostatic drive system.
a. shortening; reducing
b. lengthening; increasing
c. lengthening; reducing
d. shortening; increasing
Question 4The sleep/wake shift involves
a. many adolescents switching to sleeping during the day rather than the night.
b. increased sleepiness both during the day and at night among many adolescents.
c. decreased sleepiness both during the day and at night among many adolescents.
d. increased sleepiness during the day and decreased sleepiness at night among many adolescents.
Question 5The bodys ________ keeps track of how many hours a person has been awake and creates increasing pressure to fall asleep.
a. circadian timing system
b. reward center
c. homeostatic drive for sleep
d. limbic system
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