The following article will review the evolution of thought in time of Italian psychiatrist and psychotherapist Vittorio Guidano (1944-1999), considered one of the founders of the Italian cognoscitivism.References will be made to some relevant epistemological and historical landmarks that took place simultaneously to his theoretical development that went from the behavioral to the cognitivestructural to finally reach a post-rationalist posture. Likewise, some final trails that have permitted a further development of the paradigm itself will be also explored.    En el presente artículo se revisa la evolución del pensamiento del psiquiatra y psicoterapeuta italiano Vittorio Guidano (1944-1999), considerado como uno de las figuras seminales del cognoscitivismo italiano, señalando algunos hitos epistemológicos e históricos que acontecieron de manera coetánea a su devenir teórico desde lo conductual a lo cognitivo estructural y, finalmente, post racionalista. Asimismo se delinean de manera final, algunas líneas que han continuado el desarrollo del modelo.