This article explores the relationship between the law and psychology as mechanisms of social control in Colombia. It shows how psychology has conditioned the production and orientation of legal discourses, while the law has had a leading role in establishing psychology as a science and as a social and health profession. This article emphasizes the reflexive effect (reflexivity) that is the basis of this relationship, and which has caused a bidirectional phenomenon: The psychologization of the law and the legalization of psychology. This facilitates the totalization of psico-legal social control. This device for social control requires from theory a new conception of the law and from practice more creative forms of resistance.