Which Situation Represents a Threat to Internal Validity in an Experimental

question 5

Multiple Choice

Which situation represents a threat to internal validity in an experimental study measuring the effect of a videotape of home-going instructions for patients being discharged after coronary artery bypass graft surgery?

• A) Both men and women were included as subjects in the study.
• B) Two new surgeons began performing the coronary artery bypass graft surgeries.
• C) Patients in the experimental group discussed aspects of the tapes with patients in the control group.
• D) Data collection took 1 year.

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Definitions:

Impostor Rule

A legal theory pertaining to fraudulent representation, where a person deceitfully assumes the identity of another to gain a benefit or cause harm.

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Negotiation

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