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Testing stimulus generalisation as a mechanism for impression formation.

Leoni S Masroujah1, Stephanie Wilcke2, Linda Jeffery3

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This summary is machine-generated.

Prior experiences shape trustworthiness judgments. Facial resemblance to known individuals influences impressions of strangers, demonstrating stimulus generalization in social learning.

Keywords:
AttitudesFace perceptionImpression formationSocial cognitionSocial learningTrustworthiness

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Area of Science:

  • Psychology
  • Social Psychology
  • Cognitive Science

Background:

  • Facial appearance influences trustworthiness judgments.
  • The role of prior experience in shaping these judgments is less understood.
  • Stimulus generalization, a learning principle, may explain how experience influences impressions of strangers.

Purpose of the Study:

  • To investigate if stimulus generalization, specifically based on facial resemblance, influences trustworthiness impressions.
  • To determine if pre-existing attitudes towards known individuals predict trustworthiness impressions of strangers' faces.

Main Methods:

  • A novel face resemblance paradigm was employed.
  • Participants' pre-existing attitudes towards celebrities were measured.
  • Trustworthiness impressions of strangers' faces, manipulated to resemble celebrities, were assessed.
  • Multi-level modeling was used to account for facial appearance and participant variations.

Main Results:

  • Pre-existing attitudes towards known individuals significantly predicted trustworthiness impressions of strangers' faces.
  • This effect remained significant after controlling for facial appearance and participant differences.
  • Strong support for stimulus generalization was found, linking real-world social learning to trustworthiness impressions.

Conclusions:

  • Impression formation integrates visual appearance with prior experiences to guide trust decisions.
  • Social learning significantly influences how we perceive trustworthiness in unfamiliar individuals.
  • This research highlights the overlap between person perception, attitude formation, and learning principles.