摘要：This article discusses the first development of communicative interaction between mother and child, by analyzing the connection between expression and smile. A total of 13 mother–child dyads, recruited at the moment of admission to hospital, participated in the study. Observations have been made when the children were 3, 6, and 9 months old. Mother and child were put in front of each other, and the mother was asked to play freely with her child using a set of toys. The sequential codification of the mother’s and the child’s behaviors (occurrence and duration) was encoded by two independent observers. Occurrences and durations were analyzed to verify the increase of the interactive dyadic exchange along the three follow-ups. The results highlight an increase in synchronic behaviors in the dyad as the child’s age increases, showing the circularity of the dyadic interaction: Mothers increase the occurrences of contingent responses and children increase their competences regarding emotional regulations.
