ABSTRACT
A critical review of the knowledge elaborated in psychological research reveals that developmental psychology has generally studied the construction of mind and self from an individualistic and nonhistorical perspective that isolates the individual's performance from his or her partners' actions. From that perspective, Vygotsky (1978) stated, we are able to recognize some psychological functions in the individual only when they are mature, ignoring the process that led them to maturation. Using that approach, not only have human beings been studied as already constituted subjects, but logical reasoning has also been considered, teleologically, as the most mature form of human thinking. Nonrational aspects of human behavior were often not considered. Particularly, the semiotic character of human behavior has been fragmentarily explained and underrated as an important factor in human thought and action.
