Seabra-Santos, M.J. and Major, S. 2014. Factor validation of the portuguese version of the social skills scale of the Preschool and Kindergarten Behavior Scales . Paidéia (Ribeirão Preto). 24, 58 (May 2014), 145–154. DOI:https://doi.org/10.1590/1982-43272458201402.