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Lateralized asymmetries in self-perception

E Strauss, E Kaplan

Cortex; a Journal Devoted to the Study of the Nervous System and Behavior

|August 1, 1980

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Facial emotion perception and brain hemisphere specialization were studied in males and females. Findings suggest emotional processing asymmetries are more pronounced in females, challenging existing theories on hemispheric emotional specialization.

Area of Science:

Neuroscience
Cognitive Psychology
Psychology

Background:

Hemispheric lateralization of brain function is a key area of neuroscience research.
Previous theories proposed distinct roles for the left and right hemispheres in processing positive and negative emotions, respectively.

Purpose of the Study:

To investigate sex differences in facial emotion perception and self-recognition.
To examine the hypothesis of right hemisphere specialization for negative affect and left hemisphere for positive affect.

Main Methods:

Thirty right-handed participants (males and females) viewed composite images of their own faces displaying happy and sad emotions.
Participants identified which composite image was more similar to themselves and depicted a more intense emotion.

Related Experiment Videos

Main Results:

Results in females did not support the proposed hemispheric specialization for positive versus negative emotions.
Facial emotion perception asymmetries were more pronounced in females compared to males.

Conclusions:

The study challenges established theories of hemispheric emotional specialization, particularly in females.
Sex differences in emotional processing and brain lateralization warrant further investigation.