Practice Quiz

EPPP Psychology

Category - Research Methods and Statistics

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The best way to control for “history” that threatens a study’s internal validity is to _____ .
  1. Include more than one group
  2. Control the same way as the “testing” situation
  3. Randomly assign participants to groups
  4. A and C
Explanation
Answer: D - The best way to control for history is to include more than one group and randomly assign participants to groups.
Including more than one group as well as randomly assigning subjects into the groups are both ways to control history. The testing is controlled by administering the dependent variable only once as a post-test or including at least two groups that both complete a pre and post-test.
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