In evaluating a new theory, a psychologist asks the questions "Does the theory adequately explain behavior? Does the theory stimulate new research? Does the theory suggest how to treat psychological disorders?" This psychologist is judging this theory by its
a. truthfulness.
b. usefulness.
c. concreteness.
d. reliability.
B
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The royal astronomer of England, Nevil Maskelyne, discovered the phenomenon that is known as the personal equation
a. True b. False
Researchers are attempting to assess if cognitive behavioural therapy (CBT) is an effective treatment for depression. Participants with unipolar depression are assessed and then randomly assigned to either a treatment group or a control group. The treatment group receives CBT twice per week for 6 weeks. The control group receives no treatment. At the end of the 6 weeks, the depression levels of
both groups are reassessed. This study found that CBT treatment was more effective than no treatment but is limited because it did not control for: A) natural improvement. B) placebo effects. C) preexisting differences among participants. D) participant gender.
Tears shed in response to emotional events _________ tears shed while peeling onions
a. contain more protein than b. contain more glucose than c. contain less water than d. have the same composition as
Dr. Ayala conducts an experiment where she gives half her participants a yellow pill containing a drug that keeps them awake during psychology lectures. She gives the other half of her participants an identical-looking yellow pill that does not contain the drug. This experimental design controls for
A. experimenter bias. B. random variables. C. a placebo effect. D. confirmation bias.