Just watching two other people make eye contact triggers a physical stress response in your own body.
April 1, 2026
Original Paper
Spectator to a meeting of minds: Vicarious eye contact elicits psychophysiological responses in the observer
PsyArXiv · yxz39_v1
The Takeaway
We don't just react to being looked at; we are physically sensitive to 'vicarious' gaze. Observers showed increased skin conductance (arousal) when watching two strangers look at each other, suggesting our bodies treat others' social connections as biologically relevant information.
From the abstract
Research has shown that dyadic eye contact elicits psychophysiological responses related to affect and attention. In daily life, we also frequently notice eye contact occurring between other people, even when we are not directly involved. This study investigated whether such vicarious eye contact elicits affect- and attention-related psychophysiological responses in observers. In two experiments, we measured participants’ skin conductance (affective arousal), facial muscle activity (affective va