Abstract

This essay considers the idea of the psychological processes’s ontogenesis looking forward to shed somelight upon the reflection on the biopsychosocial unity of the human being. To complete this objetive, differenttheories are articulated. All these theories present different perspectives on human development –regardingearly development– characterized by the offerings of relevant information on the origin of “the psychological”,from “the biological”, with contributions from “the social”. A nodal point is arrived when recognizing emotionas a starting point of interaction, thus, as a nucleus to the articulation of the biological with the psychologicaland the social, as a motor of evolution.