We are highly tuned to each other’s visual attention.
Perceiving the eye or hand movements of another person can
influence the timing of a saccade or a reach of our own.
However, it is not clear whether the effect of social cues is
due to the appearance of the cue – a hand or an eye - or the
belief that the cues are connected to another person. In two
experiments we investigated this question using a spatial
cueing paradigm and measuring the inhibition of return of
visual attention. When participants believed that a cue
stimulus – a red dot – reflected the attentional focus of
another person via an eye tracker, they responded differently
to when they believed its location was determined by a
computer. Despite previous claims that they are ‘blind’ to
such factors, when a cue was imbued with a social context it
exerted a stronger influence over low-level visual attention.