Descripción: “...I present a brief summary of the research, about two drugs of great abuse in Colom­bia: Cocaine and alcohol, carried out at Universidad Católica de Colombia's labora­tory of experimental psychology. By means of animal model, we have evaluated the effects of different doses of cocaine and alcohol (0.1,1.0,10 y 20,mg/kg) on several parameters of aggressive, emotional, and social behavior in adult female and male rats and mice, as in sons of addicted mothers along gestation time. ...”