Studies conducted in Western countries document the special role of mother-infant face-to-face exchanges for early emotional development including social smiling. A few cross-cultural studies have shown that the Western pattern of face-to-face communication is absent in traditional rural cultures, without identifying other processes that promote emotional Co-regulation. The present study compared three different samples: Western middle-class families in Italy, rural traditional Nso farmer families in Cameroon, and West African sub-Saharan immigrant families in Italy using biweekly observations of 20 mother-infant dyads from each cultural context from age 4 to 12 weeks. Longitudinal sequential analysis of maternal and infant behaviors showed that from as early as 4 weeks, in Italian dyads maternal affectionate talking is linked with infant active attention to mother in sequences of face-to-face contact; this link fosters the subsequent emergence of infant smiling/cooing, and then sequences of positive feedback between infant and maternal emotional expressions that, by the 3rd month, dynamically stabilize. In contrast, for Cameroonian/Nso dyads over the 2nd and 3rd month, maternal motor stimulation marked by rhythmic vocalizing is linked with infant active attention to surroundings. The relatively few smiling/cooing actions of Nso babies at their mothers were answered mainly with tactile stimulation that did not foster the maintenance of face-to-face visual contact. Finally, West African immigrant dyads showed a combination of both face-to-face and sensorimotor coregulated exchanges observed in their new and native cultures. These findings suggest that emotional Co-regulation in early infancy can occur via multiple, culture-specific pathways that may be substantially different from the western pattern of face-to-face communication. (PsycINFO Database Record (c) 2019 APA, all rights reserved).

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Cameroon facial expression immigrant agricultural worker human Tactile stimulation Maternal Behavior child behavior case report infancy female Infant PsycINFO clinical article Article positive feedback sequential analysis mother human experiment Italy attention