Abstract: In order to explore the serial mediation of perception of threat and emotional insecurity between interparental conflict and adolescents' social anxiety, we conveniently chose 500 high school students from two public high schools in Henan province as our subjects and investigated them with such instruments as Children's Perception of Interparental Conflict Scale (CPIC), Security in the Interparental Subsystem Scale (SIS scale) and Social Anxiety Subscale. Data were collected and analysed with SPSS 17.0, and we used the bias-corrected percentile Bootstrap method to analyze the serial mediating roles of perception of threat and emotional insecurity between interparental conflict and adolescents social anxiety. This study simultaneously tested the cognitive contextual theory and the emotional security theory so as to explore the mechanisms by which interparental conflict affected adolescents' social anxiety. It revealed the different effects of perception of threat by adolescents on different dimensions of emotional insecurity. The results indicated that, interparental conflict affects adolescents social anxiety mainly through three ways: through the mediating role of perception of threat; through the mediating role of emotional insecurity, especially the role of negative representation and emotional maladjustment; through the mediating roles of both perception of threat and emotional insecurity. Parents reduce their conflicts before adolescents, resolve their conflicts in reasonable ways, so as to lower adolescents' perception of threat and emotional insecurity, and finally reduce their social anxiety in interpersonal contexts.

Key words: adolescent, interparental conflict, perception of threat, emotional insecurity, social anxiety