The arguments among followers o Behaviorism in different countries of Latina America and the criteria of a Psychology with Marxist orientation is a up to date thema which is expressed in the different scientific events held in this area and in the literature, denoting the different criteria concerning the role of Marxist philosophy and its relation to applied sciencies, particularly Psychology. The present paper refuses the criteria of Mexican representatives of the so called "school of Behaviour Analysis", published in the Vol. 11, Number 3 (1985), whose author attempts to demonstrate the misinterpretation of some classics of Marxismo-Leninismo.