Theoretical and methodological dimensions of scientific research need to be coherent. To illustrate such requirement we first present the EEA model, applied to the study of the process of development of mother-infant communication system and to the emergence of the dialogical self is studied. This model integrates three developmental patterns of organization of the mother-infant communication system: establishment, extension and abbreviation (EEA). Subsequently, we present, discuss and justify the conceptual basis and the two theoretical-methodological perspectives that give support for this model, Dynamic Systems and Dialogism according to Bakhtin.
developmental process; mother-infant; dynamic systems; dialogism; self