THE DEVELOPMENT OF TRIADIC INTERACTIVE COMPETENCES DURING THE FIRST YEAR.

The focus of this longitudinal study is the development of family interactions from pregnancy to the first 9th months infant with a new observational procedure: the Losanna Trilogue Play (LTP, Fivaz-Depeursinge & Corboz-Warnery, 1999). The research has main aims: a) to investigate the applicability of LTP in Italian context, b) to study the development of infants’ interactions and the patterns of stability and change during the first year Methods: the participants consisted of 70 non referred primiparous families. The families have been met in pregnancy (at 7° month), at 4° and 9° month age. We used an observational setting, the Lausanne Trilogue Play (LTP) to evaluate the development of interactive competences of families: in pregnancy the families played a virtual interaction with a doll at 7th month of pregnancy, and then played with the child at 4 and 9 months. Results: a) a good inter-rater reliability in Italian context. Only difference is for the scale “Structural of play”: Italian population play for a long time during the LTP then Swiss population. b) co-parental interaction during pregnancy will be a predictor of families developmental interactions after infant’s born R2=.0,069; F(1,69)= 5,063; p=.028 (t=2,250; p=.028; β= .263). There is no stability of family interactions from pregnancy to the first 9th months. The multilevel analysis show a linear relation between time and the families interactions: there is a high score of 2,35 point. Conclusions. The results show: the Losanna Triadic Play procedure can be applied in the Italian context. During first 9th months the development of family interactions increased in a homogeneous way stressing the possibility of an evolutionary model common to all the families. Since the early months infants can be interacting with 2 people at once.