Certain neurotransmitters that exert inhibiting influences on impulsive thoughts and acts during the day are less plentiful during REM dreaming. They are _____ and _____
a) dopamine; acetylcholine.
b) endocannabinoid; endorphine.
c) adrenaline; cortisol
d) serotonin; norephinephrine
Answer: d
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Which of the following is NOT a drawback to correlational studies?
a. Researchers must give up some control of the research conditions. b. One can never ensure that groups are comparable in every way. c. Subjects cannot be assigned randomly to the various conditions. d. The results may not hold true in the real world outside of the laboratory. e. It cannot be determined whether one variable caused a change in the other.
A country's mean "satisfaction with life" correlates most positively with which of these?
a. Good opportunities for women b. Wealth of the richest people c. Percentage of the population under age 30 d. Warm weather