Which of the Following Situations Represents a Threat to Internal

question 3

Multiple Choice

Which of the following situations represents a threat to internal validity in an experimental study measuring the effect of audio-taped instructions to patients being discharged home after coronary artery bypass graft surgery?

• A) Both men and women were included as subjects in the study.
• B) Two new surgeons recently began performing the coronary artery bypass graft surgeries.
• C) Patients in the experimental group passed their tapes on to those in the control group receiving usual care.
• D) Data collection took 1 year.

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Definitions:

Distributions

Payments made by a fund, trust, or company to its shareholders or partners, often from profits or interest earned.

Owners

Individuals or entities that hold a property right or equity interest in a business.

Financial Flexibility

The ability of an individual or organization to adapt to financial challenges and take advantage of opportunities, maintaining operation under various financial conditions.