A scholarly examination of the specular function in pathology by clinical psychologist Stéphane Thibierge. This work explores psychoanalytic concepts related to the specular function, investigating its role and manifestations in pathological contexts. Published by Erès in 1999, the book contributes to the field of clinical psychology through theoretical analysis and case study examination. The text addresses fundamental questions about the relationship between image, reflection, and psychological pathology, offering insights into the specular dimension of human experience and its clinical implications.