The aim of this research is to show the main social patterns in five mother-infant dyads (3 males and 2 females), observed in their families (48 sessions-8/16 weeks). The maternal patterns Speaking to, Smiling at, Touching directed to infants present significant correlations in our Ss (rs Spearman less than 0.01 p less than 0.001). Infants are active initiators in Looking at/ Smiling by mother, Vocalizing/ Smiling by mother. Moreover maternal initiatives differ significantly in Smiling at/ Looking at by infant, Smiling at/ Vocalizing by infant (t Student less than 0.01 p less than 0.001).