A psychologist has collected some data on the number of friends that college students report they have. The data set follows: 6, 4, 3, 2, 7, 3, 8, 5. If the psychologist reports 3 as a measure of central tendency, which measure was used?
a. mode
b. mean
c. median
d. standard deviation
Answer: a.
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Which drug used to treat schizophrenia effects both dopamine and serotonin?
a. chlorpromazine b. lithium c. benzodiazepine d. risperidone
Regarding insomnia, which of the following statements is FALSE?
a. About 60 million Americans have frequent or chronic insomnia. b. Insomnia can harm people's work, health, and relationships. c. If sleep problems last for more than one week, then a diagnosis of chronic insomnia can be made. d. If you have insomnia, it is usually best to get up and do something useful or satisfying until you feel that you are struggling to stay awake.
Studies have found that students who learn to speak two languages will have
a. a lack of mental flexibility. b. weaker general language skills. c. better control of their attention. d. poor problem-solving abilities.
Regarding the effects of open vs. closed adoptions, most research supports the finding that
A. adoptive children were less satisfied with open adoptions. B. biological moms were less satisfied with open adoptions. C. biological moms had more unresolved grief with closed adoptions. D. adoptive parents were more satisfied with open adoptions.