"External validity" refers to the generalizability of study results.
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Q45: Experiments afford less control over extraneous variables
Q46: In a "perfect" experiment, the only rival
Q47: When possible, matching should be substituted for
Q48: Tests of statistical significance indicate whether differences
Q49: An experiment's internal validity depends upon how
Q51: Laboratory experiments usually are high in external
Q52: The most common method of selecting a
Q53: Most experiments are conducted with college students
Q54: The use of college student volunteers limits
Q55: Replication is often used to increase the
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