En el siguiente texto se realiza un ejercicio hermeneutico de la obra de Freud en el que discute, con fines aclarativos sobre el tema, el sentido que el padre del psicoanalisis le otorgo al concepto de “determinismo psiquico”, un termino fundamental de su teoria que ha originado erroneas atribuciones al psicoanalisis, especialmente relacionadas con el tema del libre albedrio humano. En el articulo se sostiene que Freud empleo dicho concepto para sostener la racionalidad que tenian los fenomenos psiquicos, no la carencia de autodeterminacion que tienen los sujetos en su vida. Palabras clave: Psicoanalisis – Freud – Determinismo – Causalismo - Predictibilidad . ABSTRACT In this paper a hermeneutics exercise is carried out about Freud’s work in which it is discussed in order to make clear, the sense the father of psychoanalysis makes about the idea of Psychic determinism, a key concept of his theory that has generated some misunderstandings in the interpretation of the psychoanalysis theory, particularly related to the issue of human free will. In this article, it is exposed that Freud used this concept to support the rationality of the psychic phenomena, but no the lack of self-determination that present the individuals in their life. Key words: Psychoanalysis, Freud, Determinism, Causality, Predictability