Which of the Following Is a Threat to the Internal

question 40

Multiple Choice

Which of the following is a threat to the internal validity of studies using one-group pretest-posttest design?

• A)Cohort effects
• B)Statistical regression
• C)Propensity score matching
• D)Selection bias

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Definitions:

Uncertainty

A condition where the outcome of an event or the effect of a decision is unknown.