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.
B) placebo effects.
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The central nervous system is made up of the
A. brain and spinal cord. B. brain only. C. spinal cord only. D. nerves leading to and from the brain.
Social support of others is valuable in coping with stress as it can
A) reduce illness. B) reduce anxiety and pain. C) provide emotional encouragement. D) all of the above
According to Levinson, of the many components of the __________, usually only a few, relating to family, close friendships, and occupation, are central
A) ego B) internal working model C) social clock D) life structure
Sandra has taken a new job at Barney's Beef Burgers near her school. She is bothered by the loud hum from the ventilation system right over her head at the cash register. A week later Sandra barely hears the hum. This demonstrates the process of ________.
A. habituation B. accommodation C. sensitization D. acclimation