Early childhood interventions based on the promotion of parenting in low-income families have the potential of increasing the childhood development, therefore lowing the social risks from the low socio-economic status. This study investigated the technical viability for implementation of the intervention program Leitura Desde o Berço in a Municipal Nursery in the Metropolitan Region of Rio de Janeiro and the capacity of this program to produce an increase in cognitive and language development in children of 24-42 months of age. Sixteen caregiver-child dyads that were enrolled at the Municipal Center for Early Childhood Education in Seropédica/RJ participated in this study. The results showed that the program Leitura Desde o Berço presents quality of resources and techniques, however, there has been little involvement of the institution and caregivers, such as the program did not increase children s cognitive and language skills. Thus, we suggest the implementation of public policies in education and health aimed at childhood development in the educational curriculum of the municipalities, so that intervention programs can be included in nurseries and schools and investigations on their effects in later stages of child development can be carried out.