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Prejudice drives exogenous attention to outgroups.

Tamara Giménez-Fernández1, Dominique Kessel1, Uxía Fernández-Folgueiras1

  • 1Facultad de Psicología, Universidad Autónoma de Madrid, Madrid 28049, Spain.

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Summary

Implicit prejudice, not familiarity, drives attention capture by outgroup faces. Event-related potentials (ERPs) like N170 show heightened responses to prejudiced faces, indicating sensitivity beyond behavioral measures.

Keywords:
N170ethnic outgroupexogenous attentionhabituationimplicit prejudice

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Area of Science:

  • Cognitive Neuroscience
  • Social Psychology
  • Psychophysiology

Background:

  • Exogenous attention automatically detects stimuli, reorienting focus.
  • Ethnic outgroup faces capture attention more than ingroup faces.
  • The role of prejudice versus familiarity in this effect is unclear.

Purpose of the Study:

  • To investigate if prejudice, rather than familiarity, drives enhanced exogenous attention to outgroup faces.
  • To examine the neural correlates of attention capture by different outgroup types.
  • To compare behavioral and electrophysiological measures of prejudice effects.

Main Methods:

  • Participants (N=76) performed a digit categorization task with distractor faces (prejudiced outgroup, non-prejudiced outgroup, ingroup).
  • Face familiarity was manipulated via habituation.
  • Behavioral data (reaction time, accuracy) and event-related potentials (ERPs), specifically N170, were recorded.
  • Explicit and implicit prejudice measures were administered.

Main Results:

  • N170 amplitude was significantly larger for prejudiced outgroup faces compared to non-prejudiced outgroup and ingroup faces, irrespective of habituation.
  • N170 effects correlated with implicit prejudice measures.
  • No significant differences were found in behavioral measures (reaction time, accuracy).

Conclusions:

  • Implicit prejudice, not familiarity, underlies the observed attention effects reflected in N170 amplitude.
  • The N170 component is a sensitive neural marker for prejudice, potentially more so than behavioral measures in this context.