This paper aims to travel historically through the path of consolidation on the Scientific Psychology. Starting from de Cartesian system when Modern Age began, we can observe the establishment of modern regulations, which later were radicalized by the Sciences, including Psychology, by establishing a disciplinarian character in their praxis. Through this paper, the scientific objectivity for the operationalization of the scientific psychology and its ethical-political implications arediscussed, seeking to understand how Psychology designed the subjectivity looking for scientific legitimacy and the implications of this tendency in contemporary subjectivity. As a result, the contemporary times reveal a psychological science still limited to a...