In an experiment on the effects of level of motivation on the performance of typists, the researcher randomly assigned one-third of her subjects to each of three levels of motivation (and then induced different levels of motivation in the three groups). She measured the average words typed per minute by each group, and found that performance was highest under medium motivation, average under low motivation, and worst under high motivation. What was the independent variable in this experiment?
A. motivation
B. typing speed
C. variation in typing speed
D. manipulation of typing speed
Answer: A
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Which of the following statements regarding spinal cord injuries and sexuality is TRUE?
a. Men with spinal cord injuries almost always experience sexuality problems whereas women rarely do. b. Most men who experience spinal cord injuries go on to experience normal levels of erection and orgasm. c. Prosthesis implantation in men with spinal cord injuries has shown high satisfaction and low complication rates. d. Men and women who experience spinal cord injuries typically do not retain a desire for sexual activities.
What type of test measures a person’s potential for learning?
a. Interest inventories b. Intelligence tests c. Aptitude tests d. Achievement tests
Misleading information can often be inadvertently supplied to an eyewitness during the process of an investigator's interview and can result in false recollections. When this happens it is known as _____
a) the misinformation effect. b) source amnesia. c) encoding failure. d) retrieval failure.
in the grey matter of the brain and spinal cord, there are many more neuroglia cells than neurons
a. true b. false