Facial expressions sex

There exists a stereotype that women are more expressive than men; however, research has almost exclusively focused on a single facial behavior, smiling. A large-scale study examines whether women are consistently more expressive than men or whether the effects are dependent on the emotion expressed. Studies of gender differences in expressivity have been somewhat restricted to data collected in lab settings or which required labor-intensive manual coding. In the present study, we analyze gender differences in facial behaviors as over 2, viewers watch a set of video advertisements in their home environments. Using a new automated facial coding technology we coded facial activity. We find that women are not universally more expressive across all facial actions.
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Sex Differences in Affective Facial Reactions Are Present in Childhood

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A large-scale analysis of sex differences in facial expressions

Background: We systematically reviewed the literature to determine the influence of sex hormones on facial emotion processing FEP in healthy women at different phases of life. Results: Despite the limited number of studies in some categories and the existence of inconsistencies in the results of interest, the findings of the review suggest that FEP may be enhanced during the follicular phase. Studies with women taking oral contraceptives showed reduced recognition accuracy and decreased responsiveness of different brain structures during FEP tasks. Studies with pregnant women and women in the postpartum showed that hormonal changes are associated with alterations in FEP and in brain functioning that could indicate the existence of a hypervigilant state in new and future mothers. Exogenous administration of testosterone enhanced the recognition of threatening facial expressions and the activation of brain structures involved in the processing of emotional stimuli.
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Sex Hormones and Processing of Facial Expressions of Emotion: A Systematic Literature Review

Adults exposed to affective facial displays produce specific rapid facial reactions RFRs which are of lower intensity in males compared to females. We investigated such sex difference in a population of 60 primary school children 30 F; 30 M , aged 7—10 years. We recorded the surface electromyographic EMG signal from the corrugator supercilii and the zygomatici muscles, while children watched affective facial displays.
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There has been much research on sex differences in the ability to recognise facial expressions of emotions, with results generally showing a female advantage in reading emotional expressions from the face. Therefore, little is known about how expression intensity and dynamic stimuli might affect the commonly reported female advantage in facial emotion recognition. Overall, females showed more accurate facial emotion recognition compared to males and were faster in correctly recognising facial emotions. The female advantage in reading expressions from the faces of others was unaffected by expression intensity levels and emotion categories used in the study.
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