According to Campbell, Why Is Regression to the Mean Such

question 56

Multiple Choice

According to Campbell, why is regression to the mean such a likely explanation when evaluating the effects of social programs (e.g., speeding crackdowns) ?

• A)programs to fix some problem are usually begun after an especially bad year
• B)program evaluation is always correlational rather than experimental
• C)it is usually easy to rule out all other confounds
• D)regression is the one confound that cannot be evaluated by comparison with a control group

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