This book is a translation of “Psychologie de la perception” published by the Presses
de l’Université Laval and has the same name as a course offered at the School of Psychology of Laval University, Québec. It is not a coincidence; the book was writtenfor students of this course. Overthe years, whether at Laurentian Universitya few decades ago or at Laval University since 1996, I learned a lot from the questions and needs for clariffication voicedby the students. The book is partly a response to the requested explanations regarding some of the main phenomena, techniques, and principles encountered in the ?eld of perception. I would like to thank Anne-Marie Grondin who produced numerous illustrations contained in this book; Tsuyoshi Kuroda, expert in psychoacoustics, who provided many tips and some figures in the preparation of Chaps. 2 and 3; and Daniel Voyer of the University of New Brunswick for his fine revision of the content.