Friday, Sep 11, 2026 The claims desk. Receipts included. POWERED BY LENZ ↗
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A large 2019 replication found no reliable “warm drink, warm person” effect.

The Claim

Holding a warm drink causes people to perceive others as more friendly or warm.

Verified by Lenz ·

The Short Version

This popular psychology claim rests primarily on a single 2008 study that has not reliably replicated. A more rigorous replication attempt (Chabris et al., 2019) found no evidence for the effect, and methodological critiques highlight the original study's small sample size and borderline statistical significance. Most sources cited in support are press coverage or educational summaries of that same 2008 finding — not independent confirmations. Presenting this as an established causal relationship omits critical scientific debate.

Caveats

  • The original Williams & Bargh (2008) study has faced a notable replication failure using more rigorous methods (Chabris et al., 2019), casting doubt on the reliability of the effect.
  • Most sources appearing to support the claim are press releases, media articles, or educational summaries of the same single study — not independent empirical replications.
  • The original study used small samples and produced borderline-significant results, which increases the risk that the finding was a statistical artifact rather than a real effect.

The Receipts

  1. Experiencing Physical Warmth Promotes Interpersonal Warmth - PMC

    PMC (Science journal article)

  2. Experiencing Physical Warmth Promotes Interpersonal Warmth

    Yale ACME Lab (Williams & Bargh PDF)

  3. CU-Boulder Researcher Finds Link Between Physical and Interpersonal Warmth

    University of Colorado Boulder

  4. Experiencing Physical Warmth Promotes Interpersonal Warmth

    NASA ADS (Science abstract)

  5. With hot coffee, we see a warm heart, Yale researchers find - YaleNews

    YaleNews

  6. Effect of warm pressure on feelings of social connection with close others - UC San Diego

    UC San Diego

  7. Hot drinks encourage warmer feelings | Psychology | The Guardian

    The Guardian

  8. How hot beverages build trust and empathy | UMN Extension

    University of Minnesota Extension

  9. No Evidence That Experiencing Physical Warmth Promotes Interpersonal Warmth

    University of Illinois Experts

  10. Open Social Psychology - 11 Hot Coffee Effect - FORRT

    Open Social Psychology - FORRT

+ 4 more sources — see the full list on Lenz

Filed Under

Embodied CognitionSocial Perception

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