The dissertation Theoretical and fictional threads in aut(h)o(r)biographical writing investigates critically contemporary autobiographical texts and forms and models of their theoretical construction from the hypothesis of being inseparable discourses marked by constant feedback processes. In this context the hybrid statute of autobiographical writing located in the interstices of the factual and the fictional is put in doubt, challenging the referential illusion based on excluding dichotomous models. It is also questioned the status of the author as an autonomous subject, integrated, self-conscious and relativized the claim of authenticity and truth of their statements in favor of a complex and changing configuration of their modes of expression of identity in circumstantial communicative circuits, marked by alternations, exchanges and fusion of the different authorial instances and by the superposition with the figure of the narrator. The process of self-reflection and self-enacting is understood as the performance of a composite author – among others, advisee, journalist, essayist, short story writer, teacher, researcher, candidate for doctoral title – who builds an oscillating identity in the encounter with multiple others. Consistent with a non-transparent and dispersed theoretical reflection scenario and in dialogue with contemporary literary productions classified as nonspecific - constructed by the articulation of metareflections, e-mail, dreams and nightmares, essays, theoretical fragments, drawings, images, photographs, intertextual quotations, autobiographical references, short stories, chronicles and literary texts - the thesis proves its hypothesis in the experiment of a creative writing radicalizing the interactive processes of reciprocity between literary production and theoretical construction, fictionality and factuality, subject and object, authenticity and staging in this work in progress. In line with the expansion of the literary field, a transdisciplinary research perspective is chosen and, in the space of the textual configuration itself, a non-linear, interrupted, duplicated, inverted syntax writing marked by suspension points and no period. The text signals the ambivalence of the place of discourse through forms of circulation and reception, from the alternation of the autodiegetic narrator to the heterodiegetic narrator, and also by means of an ambiguous autobiographical pact, which is discouraged throughout the text. These ambivalent dynamics offer the reader possibilities of choice. From a constructivist epistemological perspective and the adoption of a metanarrative language, the thesis focuses on processes: both in writing and in research itself, thus becoming a second order observation. In this context, it offers itself as a significant contribution to an up-to-date discussion of autobiographical writing in the disciplinary space of literary studies which, in turn, are characterized as permanent work in progress.