Oddly Wired
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social influence

You are more honest when you feel observed by eyes.

A simple image of eyes displayed in a room increases prosocial behavior and honesty in participants.

In a 2006 field experiment, researchers placed a poster of human eyes above an office honesty box. Contributions increased significantly because the brain is hardwired to respond to social monitoring, even when that monitoring is non-human.

You behave as if you are watched, even in private.

Where this comes from

Study
Bateson et al., 2006, Biology Letters
What the check found
The cited paper (Bateson, Nettle, & Roberts, 2006) exists and supports the claim. The Gregory Bateson in the provided context is an unrelated historical figure.
Confidence
Well replicated

Related

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