Oddly Wired
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perception

Holding a warm drink makes you perceive people as kinder.

An initial 2008 study suggested that physical warmth might prime interpersonal warmth, though subsequent larger-scale replication attempts have failed to confirm this effect.

The original findings are widely debated and have not been consistently reproduced in the psychological literature.

Your judgments of character are influenced by the temperature of your hands.

Where this comes from

Study
Williams & Bargh, 2008, Science
What the check found
While the 2008 study found these results, they are not considered robust; the claim presents a controversial, un-replicated finding as a proven psychological fact.
Confidence
Solid, with limits

Related

One of these every day, and every one names the study it came from. When a finding is contested, it says so.