In industrialized nations like the United States and Canada, which nutrients are MOST often lacking in a child's diet?
A) calcium, iron, and zinc
B) B vitamins
C) magnesium, vitamin A, and vitamin D
D) vitamin C and vitamin E
Answer: A) calcium, iron, and zinc
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Which of the following does NOT belong?
a. thorazine b. antipsychotic c. prozac d. phenothiazine e. major tranquilizer
Mary is very offended by the discussion at the dinner party she is attending, but she does a good job of suppressing her emotions so that nobody can tell. Because Mary is devoting her attention to self control, she is likely to
a. recall only the positive events of the party. b. have some impairment in thinking and memory. c. change her beliefs regarding the offensive topic. d. have an emotional breakdown when she leaves the party.
A fixed-ratio schedule of reinforcement involves giving reinforcement:
A) on the first response after a varied amount of time has elapsed. B) on the first response after a specific amount of time has elapsed. C) after a specific number of responses have been completed. D) after a varied number of responses have been completed.
It is not uncommon to have a few people in your sample who do not represent the population, even if you sample randomly. Researchers refer to this as _______.
a. differential attrition b. self-selection c. nonresponse bias d. sampling error