Thatcherization impacts the processing of own-race faces more so than other-race faces: an ERP study

Soc Neurosci. 2012;7(2):113-25. doi: 10.1080/17470919.2011.583080. Epub 2011 Jul 20.

Abstract

It has been suggested that differential use of configural processing strategies may underlie racially based recognition deficits (known as the "other-race effect"). By employing a well-known configural manipulation (Thatcherization, i.e., rotating the eyes and mouth by 180°), we aimed to demonstrate, electrophysiologically, that configural processing is used to a greater extent when viewing same-race faces than when viewing other-race faces. Face-related event-related potential (ERP) responses were measured for participants viewing normal and Thatcherized faces of their own race (Caucasian) and of another race (African-American). The P1 and N170 components were modulated to a greater extent by Thatcherization for same-race faces, suggesting that the processing of these faces is, in fact, more reliant on configural information than other-race faces. Thatcherization also affected the P250 component more so for same-race faces independently of orientation. The race-dependent effects of Thatcherization as early as P1 suggest that configural encoding may be occurring much earlier than the well-cited N170.

MeSH terms

  • Adolescent
  • Adult
  • Black or African American
  • Data Interpretation, Statistical
  • Electroencephalography
  • Evoked Potentials / physiology
  • Face
  • Female
  • Humans
  • Male
  • Ocular Physiological Phenomena
  • Orientation
  • Photic Stimulation
  • Racial Groups*
  • Recognition, Psychology / physiology*
  • White People
  • Young Adult