L. Zhang, M. Wang, X. Fu, S. Chen, J. Gu, S. Li, M. Chu, Y. Wang, Y. Wang, R. C. K. Chan
Diminished social pleasure has been reported in people with schizophrenia and autism spectrum disorder (ASD). Previous studies suggested that emotional expressivity is closely correlated with social pleasure. However, the underlying psychological mechanisms between traits related to ASD, expressivity, and social pleasure remain unclear. This study aimed to investigate the relationship between subclinical schizotypal, autistic traits, facial expressions, and social pleasure. Eighty-six healthy participants (mean age = 20.35 ± 0.26 years, 44 males) were recruited to complete an emotion elicitation task by recalling memories, while their expressions were videotaped for computerized analysis using FaceReader. The intensity of different emotions (happy, sad, angry, surprised, scared, disgusted), valence, and arousal were extracted. Self-report Multidimensional Schizotypy Scale (MSS), Autism-Spectrum Quotient (AQ), and Anticipatory-Consummatory Interpersonal Pleasure (ACIPS) were administered to measure traits. Partial correlation and moderation analysis were performed. Both schizotypal and autistic traits were negatively correlated with social pleasure. Emotional expressivity had a significant moderating effect on the associations between schizotypal traits and social pleasure, and between autistic traits and social pleasure. Specifically, angry expression moderated the positive association between schizotypy and pleasure, and negative associations between autistic traits and pleasure. In addition, scared and surprised expressions moderated the associations between schizotypy and pleasure. Our findings identified the moderating role of emotional expressivity on the links between schizotypal and autistic traits and social pleasure, thereby revealing possible psychological mechanisms shared by both schizotypal and autistic traits, and highlighting potential targets for interventions in related psychopathological populations.