Examlex
To what extent did President Kennedy live up to his promise to confront the nation's "unsolved problems of peace and war . . . ignorance and prejudice . . . poverty and surplus"?
Mozart Effect
The theory suggesting that listening to Mozart's music may induce a short-term improvement on the performance of certain kinds of mental tasks.
Solomon Four-Group Design
Experimental design in which the experimental and control groups are studied with and without a pretest.
External Validity
The extent to which the results of a study can be generalized or applied to other settings, populations, or situations.
Independent Variables
Variables in an experiment that are manipulated by the researcher to observe their effect on the dependent variables.
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