ABSTRACT
This article discusses the problem of heterogeneity and its effects on Interactionism in Language Acquisition and Language Clinic, in which it acquires the status of problematic proposition. The focus is on the non-coincidence between the speaker and his/her own speech, between a speaker and other speakers of a speech community and, also, between children’s speech and symptomatic speech. It is argued that according such perspective, the heterogeneity-singularity opposition is enlightened, which raises obstacles to approach the speakers’s utterances in grammatical terms. The singularity notion is distinguished from individual differences which is deeply incorporated in the field of Psychology and the all Human Sciences, as well. The theoretical background that sustain the argumentative direction developed in this study articulates in a particular way the European Structuralism and Psychoanalysis. Saussure and Jakobson represent a departure from descriptions in favor of explanations concerning the movement that underlies the erratic or symptomatic utterances. Psychoanalysis introduces the notion of split subjective, which suspends that of epistemic subject.
Keywords:
Heterogeneity; Singularity; Individual Differences; Interactionism; Language Clinic