Eye tracking the face in the crowd task: why are angry faces found more quickly?

Area of Science:

• Cognitive Psychology
• Visual Perception

Background:

• The "face in the crowd" effect demonstrates faster identification of threatening (angry) faces among neutral or happy distractors.
• Two hypotheses explain this: "target orienting" (threats capture attention faster) and "distractor processing" (non-threat distractors are processed more efficiently).

Purpose of the Study:

• To investigate the perceptual mechanisms underlying the "face in the crowd" effect.
• To differentiate between the "target orienting" and "distractor processing" hypotheses using eye-tracking.

Main Methods:

• Replicated the "face in the crowd" effect using real faces and multiple identities.
• Employed eye tracking across search asymmetry and constant distractor paradigms.
• Compared fixation patterns and processing efficiency for angry versus happy targets in various crowd conditions.

Main Results:

• The "face in the crowd" effect was replicated.
• Eye-tracking data revealed fewer distractor fixations before identifying angry targets compared to happy targets.
• No significant difference was found in the processing efficiency of distractors.

Conclusions:

• Results provide stronger support for the "target orienting" hypothesis.
• The "face in the crowd" effect is primarily driven by attentional mechanisms directed by target properties, rather than crowd characteristics.