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The study aims to determine whether undermining a witness's credibility enhances the effectiveness of deepfake warnings on viewer perceptions.

August 7, 2026Scientific ReportsOpen Access

Credibility attacks do not enhance the impact of deepfake warnings

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The study aims to determine whether undermining a witness's credibility enhances the effectiveness of deepfake warnings on viewer perceptions.
Conducted two experiments with a total sample size of 2,500 participants.
Tested credibility reduction techniques by altering witness accents and trustworthiness.
Evaluated the impact of deepfake exposure and the effectiveness of warnings.
Deepfake exposure significantly increased guilt judgments about the accused individual.
Warnings about deepfakes only partially reduced the impact on perceptions.
Introducing discreditation of the witness did not enhance the effectiveness of the warning.

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Randomized trial examines deepfake influence and warning effectiveness in viewers, suggesting limited impact of credibility attacks.

Spearing et al. (2026) studied this question.

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