Edward has a fear of being contaminated when shaking hands with others, touching doorknobs, and being in crowded public spaces, such as subway cars. He washes his hands roughly 100 times a day. His doctor has recently prescribed an antidepressant to increase his level of serotonin. Which approach to psychological disorders does this exemplify?

In a study quoted in your text, researchers found that the effects of classical conditioning could be used to explain ________ in people undergoing chemotherapy treatment for various forms of cancer

a. anticipatory nausea b. reactive alopecia c. psoriatic eczema d. fungal infections

The hypothalamus is referred to as the stress center because it

a. determines whether a situation is stressful or not. b. is the part of the brain that is most damaged when the organism is under stress. c. is responsible for activating the flight-or-fight response. d. doesn't respond to emergency situations.