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PSYC 4320 Final Exam Questions and
Correct Answers/ Latest Update / Already
Graded
What is the term for year-long rhythms that are internally generated?
Ans: Endogenous Circannual Rhythms
Endogenous Circadian Rhythms
Ans: Self-generated rhythms that lasts about a day.
True of false: Circadian rhythms affect only the wake/sleep cycle
Ans: False. Circadian rhythms affect eating and drinking,
hormone secretion, metabolism, etc.
At what point in the day is your body temperature highest? Lowest?
Ans: Highest: late afternoon (6 hours before sleep)
Lowest: 2 hours after sleep onset (night)
When do humans experience their most pleasant mood? Least?
Ans: Most: late afternoon
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Least: early morning
Mood increases from time of wake through the late aftern oon
and then decreases slightly until bedtime.
Zeitgeber
Ans: Translates to "time-giver," this is a stimulus which resets
the circadian rhythm.
True of false: without something to reset your circadian rhythm, it
would gradually drift away for the correct time.
Ans: True
What is the dominant zeitgeber for land animals?
Ans: Light
Are social stimuli effective or ineffective zeitgebers?
Ans: Ineffective unless they induce vigorous activity.
Which is an easier transition, traveling west or traveling east?
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Ans: West; this is known as phase-delay.
What is the best way to adjust to working night shifts?
Ans: Sleep during the day under as much darkness as possible;
work under very bright lights.
True or false: The circadian rhythm remains surprisingly steady despite
external stimuli.
Ans: True. The biological clock is insensitive to most forms of
interference.
What is the main driver of rhythms for sleep and body temperature?
Ans: The suprachiasmatic nucleus (SCN) of the hypothalamus.
After damage to the SCN, the body's rhythms become erratic.
How does the SCN produce circadian rhythms?
What happens if SCN neurons are disconnected from the rest of the
brain?
All rights reserved © 2025/ 2026 |
PSYC 4320 Final Exam Questions and
Correct Answers/ Latest Update / Already
Graded
What is the term for year-long rhythms that are internally generated?
Ans: Endogenous Circannual Rhythms
Endogenous Circadian Rhythms
Ans: Self-generated rhythms that lasts about a day.
True of false: Circadian rhythms affect only the wake/sleep cycle
Ans: False. Circadian rhythms affect eating and drinking,
hormone secretion, metabolism, etc.
At what point in the day is your body temperature highest? Lowest?
Ans: Highest: late afternoon (6 hours before sleep)
Lowest: 2 hours after sleep onset (night)
When do humans experience their most pleasant mood? Least?
Ans: Most: late afternoon
All rights reserved © 2025/ 2026 |
, Page |2
Least: early morning
Mood increases from time of wake through the late aftern oon
and then decreases slightly until bedtime.
Zeitgeber
Ans: Translates to "time-giver," this is a stimulus which resets
the circadian rhythm.
True of false: without something to reset your circadian rhythm, it
would gradually drift away for the correct time.
Ans: True
What is the dominant zeitgeber for land animals?
Ans: Light
Are social stimuli effective or ineffective zeitgebers?
Ans: Ineffective unless they induce vigorous activity.
Which is an easier transition, traveling west or traveling east?
All rights reserved © 2025/ 2026 |
, Page |3
Ans: West; this is known as phase-delay.
What is the best way to adjust to working night shifts?
Ans: Sleep during the day under as much darkness as possible;
work under very bright lights.
True or false: The circadian rhythm remains surprisingly steady despite
external stimuli.
Ans: True. The biological clock is insensitive to most forms of
interference.
What is the main driver of rhythms for sleep and body temperature?
Ans: The suprachiasmatic nucleus (SCN) of the hypothalamus.
After damage to the SCN, the body's rhythms become erratic.
How does the SCN produce circadian rhythms?
What happens if SCN neurons are disconnected from the rest of the
brain?
All rights reserved © 2025/ 2026 |
