| Abstract: | A quantitative single case study is presented to illustrate how an early intervention program used two therapeutic modalities to treat a depressed mother and her 2-month-old son. Drawing upon an ecological, transactional model of development, the case study utilized a multimethod, longitudinal approach to assess the infant's developmental competence and attachment status, the mother's history and current psychosocial functioning, patterns of mother-infant interaction, and components of the family's social ecology. Measures were administered during a baseline period to assess pre-intervention functioning and were systematically repeated throughout the 2-year period of intervention. The treatment modalities included psychodynamically oriented individual therapy and Parent-Infant Relationship Treatment (PIRT) in which the dyad was also seen by a second therapist to foster more adaptive mother-infant transactional patterns. The findings indicated increased infant developmental competence and a shift from an insecure to a secure attachment classification, improved maternal psychosocial functioning, and a decline in the dyadic interactional pattern of maternal intrusiveness and infant withdrawal. The advantages of using two treatment modalities and a single case approach to evaluation are discussed. |
