This study examines the influence of mother–child and family interactions on the development of child attachment representations in middle childhood for a sample of 49 families. Mother–child interactions were observed during a snacktime in a lab setting (Moss, Rousseau, Parent, St-Laurent, & Saintonge, 1998 Moss, E. , Rousseau, D. , Parent, S. , St-Laurent, D. and Saintonge, J. 1998. Correlates of attachment at school age: Maternal reported stress, mother–child interaction, and behavior problems. Child Development, 69: 1390–1405. [Crossref], [PubMed], [Web of Science ®] [Google Scholar] ) when children were 5–6 years old. Three years later, children's attachment representations were assessed using a doll play narrative procedure (Solomon, George, & DeJong, 1995 Solomon, J. , George, C. and De Jong, A. 1995. Children classified as controlling at six: Evidence of disorganized representational strategies and aggression at home and at school. Development and Psychopathology, 7: 447–463. [Web of Science ®] [Google Scholar] ) in the lab setting. Within 6 months of the second lab visit, family interactions were filmed during mealtime and coded using the Mealtime Interaction Coding System (MICS; Dickstein, Hayden, Schiller, Seifer, & San Antonio, 1994 Dickstein, S. , Hayden, L. C. , Schiller, M. , Seifer, R. and San Antonio, W. 1994. Providence family study mealtime family interaction coding system Unpublished classification manual, Bradley Research Center, East Providence, RI [Google Scholar] ). Results showed clear differences between attachment groups on quality of mother–child and family interaction with the secure/confident group showing highest and the disorganized/frightened group showing lowest quality interactions. Family interactions predicted children's attachment representations, after controlling variance explained by prior mother–child interactions.