As for environmental factors, it is known that, since the late 1970s, women have become part of the labor market and required a place to leave their children during work hours. So, children began to spend much of their day in a different environment. However, in Brazil, with the approval of a national Law in 1996 (Lei Nacional de Diretrizes e Bases da Educação Nacional-LDB), the day care centers no longer have a social welfare aspect, but an educational character and are responsible for the “integral development of children up to 6-years old, in their physical, psychological, intellectual and social aspects, complementing the action of the family and of the community”(Art. 29 LDB). Rossetti-Ferreira et al.17 highlight that children insertion in day care centers offers a possibility of additional stimuli, as they interact with other children and caregivers. However, this benefit is directly related to the quality of the child care provided.