With regard to the treatment of hypochondriasis, some research supports the use of

a. classical conditioning and operant conditioning

The field of ________ would be interested in the effects of psychological factors such as stress, emotions, thinking, and behavior on the immune system

a. social psychology b. organic medicine c. psycho-neuroimmunology d. interactive psychology e. preventative medicine

According to some authors, the utility of distinguishing between positive and negative symptoms in schizophrenia is questioned because:

a) They are dimensions that coexist within the same patient b) There are no available measurement instruments for these symptoms c) The majority of patients do not exhibit either type of symptom d) There have been no attempts to define their characteristics