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Animals Remember Previous Facial Expressions that Specific Humans Have Exhibited.

Leanne Proops1, Kate Grounds2, Amy Victoria Smith2

  • 1Mammal Vocal Communication and Cognition Research Group, School of Psychology, University of Sussex, Brighton BN1 9QH, UK; Centre for Comparative and Evolutionary Psychology, Department of Psychology, University of Portsmouth, Portsmouth PO1 2DY, UK.

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Summary
This summary is machine-generated.

Horses can remember human facial emotions. Observing a happy or angry face influenced their later interactions with that person, showing animals can interpret emotional cues.

Keywords:
Equus caballusaffective processinganimal memoryanimal-human interactionface processinginterspecific communication

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Area of Science:

  • Animal behavior
  • Comparative psychology
  • Human-animal interaction

Background:

  • Facial expressions are key social signals for humans.
  • Animals can discriminate emotions, but memory of emotional expressions is less understood.
  • Previous research shows animals remember harm, but not necessarily emotional cues.

Purpose of the Study:

  • To investigate if horses can remember and use emotional facial expressions of humans.
  • To determine if memory of emotional expressions influences subsequent interactions.

Main Methods:

  • Horses viewed photographs of angry or happy human faces.
  • Several hours later, horses encountered the person from the photograph in a neutral state.
  • Human experimenters were unaware of the photograph the horses had seen.

Main Results:

  • Horses showed different responses to individuals based on prior emotional expressions.
  • Responses were specific to the individual who displayed the emotion, not a stranger.
  • Memory of the facial expression guided subsequent interactions.

Conclusions:

  • Domestic horses can perceive and remember human emotional facial expressions.
  • This memory influences their future behavior towards specific individuals.
  • Animals may 'eavesdrop' on human emotional cues to guide social interactions.