Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/30259
Title: The effects of androstadienone, a human pheromone, on facial emotional responses, facial emotion recognition and gender recognition
Authors: FOO YONG ZHI
Keywords: Pheromones, Androstadienone, Facial emotions, Gender
Issue Date: 1-Aug-2011
Source: FOO YONG ZHI (2011-08-01). The effects of androstadienone, a human pheromone, on facial emotional responses, facial emotion recognition and gender recognition. ScholarBank@NUS Repository.
Abstract: Pheromones, chemical substances that are released by organisms to influence or communicate with their conspecifics, are an important source of influence on the social behaviours in a wide range of species. Recent research has identified androstadienone as a human pheromone. The present study investigates the effects of androstadienone on three social behaviours: facial emotional responses, facial emotion recognition and gender recognition and how the effects of androstadienone on these variables are moderated by sex of the faces shown to the participants. One hundred and twenty one participants were exposed to either the androstadienone or a control solution in a randomised double blind placebo controlled experiment. The participants completed two tasks: facial emotion recognition task and gender recognition task. The facial emotion recognition task had dynamic morphs of faces changing from a neutral expression to a happy or angry expression. The gender recognition task had faces change from an androgynous looking to a masculine or feminine looking face. Two dependent variables were measured for each task: the intensity threshold required to recognize the emotion or gender and recognition accuracy. Facial EMG was also measured at the corrugator supercilii (frowning) and zygomaticus major (smiling) muscle regions to assess the participants? facial emotional responses during the emotion recognition task. Results showed that androstadienone muted facial emotional expressions towards male targets, increased women?s accuracy in recognizing male expressions of anger and decreased the intensity threshold required to recognize female faces. The results support the role of androstadienone in influencing social behaviours. Limitations were also discussed.
URI: http://scholarbank.nus.edu.sg/handle/10635/30259
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