Ever since Tim was born he has displayed a negative response to new foods but eventually likes them. What temperament does Tim exhibit?

Reliance on introspection got structuralists into trouble because

a. despite their training, introspectors often produced conflicting reports. b. they failed to generate an intensive program of research. c. they emphasized the purpose of behavior, as opposed to its analysis and description. d. trained introspection was rejected as being too objective.

In psychological studies, random assignment is used to ensure that:

a) there will be an independent and dependent variable. b) each person has an equal chance of being assigned to each participant group. c) the control group does not know the purpose of the study. d) the experimenter won't know who is in each group.