Post-traumatic Stress Symptoms and Adult Attachment: A 24-year Longitudinal Study

Abstract

Attachment theory has become a key framework for understanding responses to and consequences of trauma across the life course. We predicted that more severe post-traumatic stress (PTS) symptoms at age 37 years would be associated with insecure attachment at age 55 and with worse PTS symptoms 24 years later at age 61, and that age 55 attachment would mediate the influence of earlier PTS symptoms on later symptoms. Data on PTS self-reported symptoms were available for 975 community-dwelling participants from the longitudinal Vietnam Era Twin Study of Aging at ages 37 and 61 years. At age 55, participants completed the Experiences inClose Relationships Inventory, a measure of adult attachment. PTS symptoms at ages 37 and 61 correlated (r= 0.43; p<0.0001). Multiple mediation models found significant direct effects of age 37 PTS symptoms on age 61 PTS symptoms (β= 0.26; 95% confidence interval: 0.19-0.33). Anxious and avoidant attachment at age 55predicted PTS symptoms at age 61 (r= 0.34 and 0.25; ps<0.0001, respectively) andalso significantly mediated PTS symptoms over time, showing that insecure attachment increased PTS severity. Participants with higher age 37 PTS symptoms weremore likely to have a history of divorce; marital status did not mediate PTS. Analyses demonstrate the persistence of PTS symptoms from early midlife into early old age. Mediation analyses revealed that one path through which PTS symptoms persisted was indirect: through their influence on attachment insecurity.This study provides insight into ongoing interconnections between psychological and interpersonal responses to stress.