EN
With relatedness being one of the most fundamental human motives and needs, infants are born with progressive capacity to communicate with others. Social interactions are the building blocks of human development. In particular, they can be considered as a very important “port of entry” in the early psychological intervention addressed to preterm infants and their families. Authors will present a unique approach to the psychological observation of infants and their parents that combine micro- and macroanalysis of behavior. The results of own research on the parent and three-month-old infant interactions will be presented. Protodialogues between 30 motherfull term as compared to 30 mother- preterm infant dyads will be described on the level of the microanalysis of vocal interactions (time, prosody and content analysis) as well as on macroanalytic level of patterns of interactive behaviors. The presentation will be also illustrated with the results of the microanalysis of interactional behaviors of the same babies aged 6 and 12 months. The study was conducted with the use of the Praat software and Observer XT 9.0 by Noldus. Theoretical and practical implications will be discussed.