“…From the first years of life, development is modulated by a variable environment indirect to the infant's life (e. g., culture, access to education, public policies), within an immediate context (e. g., stimulation at home, parental styles). During development, these different levels of analysis are interrelated (Bronfenbrenner, 1986;Vygotsky, 1929) and contribute to differences in infant's cognitive development from the first years of life (Gago Galvagno et al, 2019, 2020a, 2020bLuo et al, 2019;Tamis-LeMonda et al, 2019) suggesting these factors are a very important issue to consider when promoting public policies that favor ontogenetic development (Yoshikawa et al, 2018). The purpose of this study is to examine how a particular element of the immediate context related to stimulation at home -electronic media use-relates to cognitive development in developmental milestones in language, motor skills and sociodemographic during the first 4 years of life.…”