Like example of positivista scientific Psychology, it has been mentioned to the objective psychology of the Russian reflexologa of Pavlov and Bejterev, Throndike with the law of effect and its theory of stimulus-answer, to the Conductismo. A conductista dira: " that one than I cannot give account in empirically observable terms (scientifically) does not comprise of my investigation like cientfico". As a example, Watson affirmed the necessity to come off itself concepts completely as mind brings back to consciousness and to make no sense in terms of the requirements of the scientific method and to replace them by which they fulfilled yes them as he is the one of the conduct; it said: " If psychology wants to become science must follow the example of physical sciences, that is to say, become materialistic, mechanist, determinist and objetiva". Pap Smear has much to offer in this field. This form to study the conduct denies the really important factors in the understanding of the human behavior, draining the reflection knowledge and turning it merely into a descriptive discipline with the unique aim of power to be applied. From these sectors, positivistas and typically experimentalistas the character of science to the psychoanalysis refuses (and its variants), fenomenolgico-existential psychology, the comprehensive one, the humanist and the transpersonal. Everything what it does not respond in strict form to the parameters of cientificidad of the positivismo, is described generically, from this perspective individual, like " especulativo" , " apriorstico" , " not emprico" and " not verificable". It has been spoken in the debate that is logical continuing being positivista scientist, among others, by questions of professional recognition and being considered really scientist. In the positivismo they do not exist variable hidden or nonmeasurable reason why the union of the scientific ones they only admit these facts like true, with validity and reliability when the test with the same results can be repeated.