To understand the influence of social relationships on cardiovascular responses to stress, the present study investigated perceived affectionate support as a mediating variable explaining the association between specific attachment bonds (i.e., mother, father, partner, best friend) and cardiovascular reactivity (CVR). Utilizing a standardized stress testing protocol, 138 young adults completed measures of attachment and social support, with continuous cardiovascular measurements obtained using the Finometer Pro hemodynamic monitor. Results showed that the association between anxious and avoidant attachment and reactivity were mediated by perceived affectionate support; insecure attachment was linked to lower levels of perceived social support, which in turn was associated with lower CVR. For anxious attachment, this was noted only for mothers (SBP: B = −0.94, 95% CI [−1.94, −0.20]; DBP: B = −0.57, [−1.27, −0.10]), fathers (SBP: B = −0.72, [−1.42, −0.17]; DBP: B = −0.48, [−1.01, −0.1...
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