A researcher is conducting an experiment to test the effect of feedback on job performance. The researcher can exercise control over extraneous variables, such as intelligence, by:
A) using participants with the same level of intelligence.
B) using participants with the same level of job performance.
C) giving all participants the same type of feedback.
D) randomly assigning participants to feedback conditions.
D) randomly assigning participants to feedback conditions.
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Menstrual myths and taboos
a. are primarily limited to North America. b. have almost completely disappeared in modern-day America. c. are largely positive in cultures outside of mainstream North America. d. provide additional evidence that women are devalued in many cultures.
Compared to control-group participants, people with anterograde amnesia are likely to
a. perform similarly on implicit memory tasks, but poorer on explicit memory tasks. b. perform similarly on explicit memory tasks, but poorer on implicit memory tasks. c. perform significantly worse on both implicit and explicit tasks. d. perform well on recognition tasks, but poorly on all other measures of memory.
Sarah is seven months old. Her parents spend three hours a day for five weeks straight holding Sarah up next to furniture in hopes that she will grab onto the furniture and stand by herself. Sarah hates this treatment and screams and cries, but her parents are unyielding. Finally, at the end of the fifth week, Sarah stands up by herself while holding onto the furniture. Her parents smile
triumphantly. What have they accomplished here? a. Sarah's parents have trained Sarah to stand up by herself earlier than the average. b. Sarah was ready to stand up by herself at about eight months of age; but her parents simply put her through a training ordeal for nothing. c. If Sarah's parents had not trained her, Sarah would have been developmentally delayed. d. Sarah's parents have respected her personal rate of growth by encouraging her with psychomotor training.
Osteoporosis can be treated and even prevented with __________
a) surgery b) collagen c) bone marrow transplants d) drugs