This study aimed at evaluating the impact of a cognitive stimulation program named ÉgALIté on the social-emotional development of preschool immigrant children from developing countries. Forty eight children and their immigrant parents were randomly assigned to the ÉgALIté group or to a waiting list group. Parents completed a socioaffective development questionnaire, the Profil socioaffectif (PSA, Dumas, Lafrenière, Capuano, & Durning, 1995), before and after the program. The results show that children of the ÉgALIté group decrease their internalized problems and increase their global adaptation. These gains were not maintained when measured four months after the program. However, these results have to be interpreted cautiously considering the large attrition rate.