The authors examined secure base functioning in couples by studying the association between daily social support experiences and attachment security in a 14-day daily experiences study of 114 heterosexual dating couples. Both members of each couple reported on daily relationship-specific attachment security and support sought, provided, and received, as well as felt support. Within- and cross-partner associations were examined, as were reciprocal associations between support and security. Results of over-time Actor-Partner Interdependence Model analyses indicated that security (in the form of high comfort with intimacy and low anxiety about abandonment) was associated with the most adaptive support experiences, whereas high anxiety about abandonment was associated with the least, and particularly with a lack of sensitive caregiving. Implications for understanding secure base dynamics in couples are discussed and guidelines for where to intervene as well as what to target in relationship distress prevention programs are provided.
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