When Individuals in One Group of a Nonequivalent Control Group

question 62

Multiple Choice

When individuals in one group of a nonequivalent control group design experience natural changes at a faster rate than individuals in the other group,there is danger of a threat to internal validity called

• A)additive effects of selection and history.
• B)additive effects of selection and instrumentation.
• C)additive effects of selection and maturation.
• D)differential statistical regression.

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Definitions:

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