Shu et al. — RETRACTED: Signing at the beginning makes ethics salient and decreases dishonest self-reports in comparison to signing at the end

Proceedings of the National Academy of Sciences, 2012 · 10.1073/pnas.1209746109

WITHDRAWN · 4 flags

In plain language

This 2012 PNAS paper claimed a simple trick — moving the signature box to the TOP of a form (before you fill it in) instead of the bottom — makes people more honest, shown in two lab studies and one large car-insurance field study. The paper has been RETRACTED (PNAS, 2021). A published forensic investigation established that the raw data behind the headline field experiment were fabricated (and that a second study's data were also tampered with, independently). So the strongest, real-world part of the paper's evidence is not trustworthy. Separately, even taking the numbers at face value, the study measures self-reported figures (a proxy for honesty), not honesty itself, and the paper's policy-level conclusions run well ahead of what three experiments on a proxy can support. Note on provenance: the copy I read was a Harvard DASH open-access manuscript supplied by the wearer, not pulled from a verified source, so every finding below carries that caveat.

Flags — what does not hold up

moderate conclusion-unsupported — The headline field experiment rests on fabricated data; the paper is retracted
integrity fatal · impact total
moderate stat-error — The reported statistics are internally consistent; the fraud is NOT visible in the arithmetic
integrity n · impact informational
low denominator-unexplained — Unit-of-analysis ambiguity in Study 3
integrity low · impact low
high overstatement — Framing outruns the design (overstatement)
integrity moderate · impact high

Next leads — where to look next

10.1177/0146167211398138 same-author
Shu, Gino & Bazerman (3 of these 5 authors), same self-report cheating paradigm; already under a formal Expression of Concern — deserves the same raw-data forensics that sank this one.
10.1509/jmkr.45.6.633 same-author
Mazar & Ariely — the "self-concept maintenance" paper that established the matrix/self-report cheating measure this study reuses; same author under the field-data fabrication finding.
10.1111/j.1467-9280.2009.02306.x same-author
Gino & Ariely — same matrix/self-report cheating measure; both authors are subjects of separate data-integrity investigations, so the shared measure and data-handling deserve the same check.

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