In an experiment, participants are usually assigned to treatments using random assignment. The reason for using random assignment is ____
a. to allow the experimenter to manipulate participant variables
b. to allow the experimenter to manipulate environmental variables
c. to help control extraneous variables
d. to increase the reliability of the outcome measures
c
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Erich Fromm's approach is best described as humanistic social analysis because it attempts a synthesis of the thoughts of
a) Freud and Adler. b) Freud and Jung. c) Adler and Jung. d) Freud and Marx.
A psychologist discovers that the blood of patients with schizophrenia contains a certain chemical not found in the general population. This means that
a. this chemical causes a person to develop schizophrenia. b. having schizophrenia causes this chemical to form in a person's blood. c. both schizophrenia and the chemical are caused by some unknown third factor, such as the typical diet in mental hospitals. d. the chemical and schizophrenia are related, but no causal relationship has been established.