A French-language professional text introducing the principles and practice of research in nursing care. The work is intended for nursing students, educators, and practitioners who need a clear entry point into scientific inquiry as it applies to health care settings. It explains how research questions are formed, how evidence is gathered and evaluated, and how methodological choices shape conclusions that can inform clinical decision-making. By connecting research concepts to the realities of nursing education and practice, the book helps readers build confidence in reading, understanding, and applying research findings. Its practical orientation makes it suitable as an introductory guide for those beginning to engage with evidence-based care and the scholarly foundations of nursing.