When using naturally occurring events as quasi-independent variables, one of the drawbacks is that:
A. the events are usually too subtle to have a great impact on behavior.
B. one has no control over when the event will occur.
C. such events rarely occur.
D. None of the answers is correct.
Answer: B
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How do nearly all drugs with behavioral effects alter brain activity? a. They attach to chromosomes and alter gene expression
b. They dilate or constrict blood vessels. c. They increase or decrease conduction velocity of action potentials. d. They alter activity at synapses.
All of the following are examples of behaviors that may contribute to sleep problems EXCEPT a. smoking a cigarette before going to bed
b. getting out of bed if you are unable to fall asleep after a reasonable period. c. vigorous exercise an hour before bedtime. d. keeping the bedroom cold.
Research by Harry and Margaret Harlow (1966) suggests that:
a. the basis of attachment is the food provided by the mother. b. contact comfort may be as important a basic need as the need for food. c. attachment is driven by the need for trust. d. infants become attached because it helps them to form their identity.
Communication between the nucleus accumbens and the ventral tegmental area (VTA) is important for reward.
Answer the following statement true (T) or false (F)