Which statement best describes the use of deception in research and when it is permissible?

• A. Always permissible if approved by the principal investigator.
• B. Deception is never used in interventions.
• C. Deception is used whenever it reduces costs.
• D. Deception requires justification, minimizes risk, and typically cannot be used unless IRB approval, debriefing, and alternatives are not feasible; generally avoided.

Answer: (D)

Deception in research is tightly regulated and requires careful justification and safeguards. It is not something researchers can use simply because they want to or because a PI approves it. The best practice is to justify the deception with a clear scientific value, ensure the potential risks to participants are minimized, and consider whether non-deceptive methods could achieve the same goals.

A key part of the safeguards is IRB review. The Institutional Review Board assesses whether the deception is necessary, whether risks are minimized, and whether the study includes a plan to disclose the true nature of the research afterward (debriefing) and to address any potential harm. In addition, researchers should pursue alternatives to deception and use deception only when no feasible non-deceptive method exists. Because of these requirements and safeguards, deception is generally avoided unless justified and approved with safeguards in place.

The other statements fall short because they imply far less oversight or justification: relying solely on a PI’s approval bypasses ethical review; deception is not categorically banned in interventions, but it is not automatically allowed; and using deception as a routine or cost-saving tactic is unethical and inappropriate.