The authors investigate whether and how borderline and pathological narcissistic traits differ in their associations with trait and state rejection sensitivity, and with affective reactions to experiences of social rejection occurring in daily life. Community adults (N = 189) completed baseline measures of rejection sensitivity, borderline personality, and pathological narcissism, and daily measures of perceived social rejection and affective states for 7 days. Vulnerable narcissism was the main driver of negative anticipated emotions for social rejection. Borderline personality made people prone to experiencing social rejection in daily life. Moreover, borderline personality traits predicted greater self-directed aggressive impulses when experiencing social rejection. Grandiose narcissism showed only a negative association with anticipatory anxiety for rejection. These findings highlight that sensitivity to social rejection is crucial in both borderline personality and pathological narcissism.
Keywords: borderline personality; ecological momentary assessment; grandiose narcissism; rejection sensitivity; vulnerable narcissism.