Links between early and concurrent attachment and reflective functioning in young adulthood

Links between reflective functioning (RF; the ability to conceive of mental states and to interpret human behavior accordingly) and concurrent attachment security have been found in both childhood and adulthood. However, the respective contributions of early and concurrent attachment security in adult RF remain unknown. This study examines the contributions of attachment security to the mother in early childhood and of concurrent attachment security to each parent in young adults' RF. Eighty-one low-risk participants (49 girls and 32 boys) from average income families took part in this longitudinal study. Attachment security was assessed at 4 years of age with a composite measure of mother-reported Attachment Q-Sort and observer ratings of the quality of mother-child interactions. At age 23, the Attachment Multiple Model Interview was administered to assess participants' attachment security to each parent. RF was coded from the participants' attachment narratives using the Reflective Functioning Scale. Attachment security to the mother at age 4 was found to be associated with RF in adulthood. Also, an interactive effect between attachment to the mother and attachment to the father in adulthood was related to RF, suggesting that attachment with one parent moderates the effect of attachment with the other parent on RF. These findings emphasize the importance of both early and concurrent attachment security in the capacity to understand mental states in adulthood. (PsycInfo Database Record (c) 2025 APA, all rights reserved).