Related Experiment Videos
Sex differences in the functional asymmetry for facial affect perception
D W Harrison1, P M Gorelczenko, J Cook
1Department of Psychology, Virginia Polytechnic Institute & State University, Blacksburg 24061.
The International Journal of Neuroscience
|May 1, 1990
Summary
Men show greater brain laterality in processing facial emotions compared to women. This study found men process left visual field emotional stimuli faster, suggesting sex differences in lateralized emotional perception.
Area of Science:
- Neuroscience
- Psychology
- Cognitive Science
Background:
- Sex differences in cognitive processing are well-documented.
- Lateralized brain function plays a crucial role in processing emotional stimuli.
- Previous research suggests potential variations in how men and women process facial affect.
Purpose of the Study:
- To investigate sex differences in the lateralized processing of facial affective stimuli.
- To examine reaction times for identifying angry and happy facial expressions presented in different visual fields.
- To explore potential differences in learning rates for emotional stimuli between sexes.
Main Methods:
- A forced-choice reaction-time paradigm was employed.
- Participants identified facial affective expressions (angry, happy, neutral) from Ekman and Friesen's stimuli.
- Stimuli were presented in either the left or right visual fields to assess lateralization.
Main Results:
- Men demonstrated greater laterality in processing facial affect.
- Men were significantly faster processing affective facial information in the left visual field.
- Response times were equivalent for men and women for stimuli in the right visual field.
Conclusions:
- Findings support greater lateralization in men for processing facial emotional stimuli.
- Sex differences exist in the lateralized processing of affective facial information.
- Variations in experimental procedures, like the number of trials, can influence conclusions in affective tachistoscope tasks.