Question
Explain why a pretest-posttest design with nonequivalent groups is likely to be higher in internal validity than either (a) a one-group pretest-posttest design or (b)
Explain why a pretest-posttest design with nonequivalent groups is likely to be higher in internal validity than either (a) a one-group pretest-posttest design or (b) a posttest-only design with nonequivalent groups.
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Theory-Based Data Analysis For The Social Sciences
Authors: Carol S Aneshensel
2nd Edition
1452287163, 9781452287164
