This doctoral thesis explores the workings and mechanisms of American bestselling Young Adult fiction through the interdisciplinary prism of stylistics, narratology, cognitive sciences, language teaching and poetics. Through the analysis of a corpus made up of Veronica Roth’s Divergent (2011), Sabaa Tahir’s An Ember in the Ashes (2015) and Tomi Adeyemi’s Children of Blood and Bone (2018)—all New York Times bestselling novels—I aim to study style but more particularly the forms and the inner workings of their narratives from a didactic and creative standpoint, in light of creative knowledge and techniques gathered among publications by both academics and published fiction writers. This perspective leads me to observe the extratextual elements relating to the writers in order to explore the underlying processes of their fiction. The novels in the corpus are placed in their generic and editorial context, taking into account their very broad readership and the identifying effects of their narrative worlds on readers of all ages. I focus on narrative techniques which I conceptualize using a combination of analytical frameworks such as Text World Theory, cognitive stylistics or stylometry. I thus hope to identify a cultural phenomenon on a literary and editorial level, to reveal its intercultural stakes due to the multicultural background of the authors and the cultural influence of the United States of America on the wider literary world. Finally, the purpose of my research is also to evaluate the effectiveness of a pedagogical redeployment of the poetic and narrative techniques exposed here through action research conducted with English studies French students during innovative writing workshops. ; Cette thèse explore les ressorts de la création littéraire et de la lecture dans la Young Adult Fiction (ou « fiction pour jeunes adultes ») à succès du paysage éditorial américain, et plus largement du monde anglophone. Elle a comme visée de construire un objet d’étude interdisciplinaire à travers le prisme de la ...