Methods

Deception and debriefing

Deception gives participants misleading information or conceals a feature that matters to their understanding. Debriefing explains the research and addresses misconceptions; it cannot retrospectively make any deceptive design acceptable.

Is withholding or misrepresenting information necessary and defensible, and how will participants’ understanding and welfare be restored?

How it works

  1. Identify exactly what participants would be led to believe. Consider a nondeceptive alternative first. APA standard 8.07 requires significant prospective value and the absence of feasible effective alternatives; it prohibits deception about expected physical pain or severe emotional distress.
  2. Prepare the explanation before running the study. Under the APA code, integral deception should be explained as early as feasible, preferably after participation and no later than the end of collection; participants must be allowed to withdraw their data.
  3. Give participants an opportunity to understand the nature and conclusions of the research. Correct known misconceptions and take reasonable steps to reduce harm. If information is delayed for justified reasons, plan protections rather than treating delay as administrative convenience.

Evidence: (Ethical Principles of Psychologists and Code of Conduct, n.d.)

Feedback that was never a diagnosis

Teaching scenario

Synthetic teaching scenario: A proposed attention task would display randomly assigned feedback saying that a participant performed below average. Students role-play the debriefing before deciding whether the design should proceed. One volunteer says they would leave believing they had a lasting cognitive weakness. The team identifies the misleading inference, considers removing comparative feedback altogether, and drafts a clear explanation that the score was assigned for the scenario. No participant is actually deceived in this classroom exercise, and no published experiment is being described.

This example is constructed for learning. It does not report an observed research result.

What can you conclude?

It helps students distinguish justified design questions from the separate obligation to explain what happened to participants.

Evidence: (Ethical Principles of Psychologists and Code of Conduct, n.d.)

Limits and common mistakes

  • Debriefing cannot erase distress or substitute for prior assessment of whether a deceptive procedure should be used.
  • The APA code supplies professional standards; applicable law and institutional review can impose additional requirements.

A mistake to catch

Writing a vague closing thank-you and assuming that it corrects the specific false belief created during the task.

Evidence: (Ethical Principles of Psychologists and Code of Conduct, n.d.)

Sources and inspection notes

Links checked October 21, 2026. Inspection scope is stated for each source; an access date is not a publication date.

  1. Ethical principles of psychologists and code of conduct. (n.d.). https://www.apa.org/ethics/code

    APA professional code; not a universal legal code Actual readable code including 2010 and 2016 amendments; see standards 8.07 and 8.08. Checked 21 October 2026.

Keep reading

Spielman, R. M., Jenkins, W. J., & Lovett, M. D. (2020). Psychology 2e. OpenStax. https://openstax.org/books/psychology-2e/pages/2-4-ethics

Nearest related OpenStax Psychology 2e reading. This is a course connection, not evidence for every specialist detail above.

Specialist reading: Ethical principles of psychologists and code of conduct. (n.d.). https://www.apa.org/ethics/code

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