Abstract

The goal of this study was to detect communicative sequences in mother–baby dyads according to the degree of prematurity, comparing them in three corrected ages (two, four and sixmonths). The observational methodology was used from the mixed methods perspective, and the design is nomothetic/ follow-up/multidimensional. Fifteen mother–baby dyads with extreme prematurity and 15mother– baby dyads with moderate prematurity participated. An observation instrument was constructed combining an observation instrument and category systems to code the dyads’ behaviours. Fifteen minutes of free interaction were recorded and Type IV data were logged. The programs HOISAN and SDIS-GSEQ/GSEQ were used to analyse the results. The results detected different behavioural patterns related to the interaction in both the expression of communicative behaviours and in the time when they were deployed in the ages evaluated.