This research project provides a comprehensive overview of neuropsychology, exploring its historical roots, key concepts, and practical applications. It begins with an examination of the discipline's origins, tracing its evolution from early neurological observations to the development of sophisticated neuroimaging techniques. The project delves into the core principles of cognitive neuropsychology, including the study of attention, memory, language, and executive functions. Furthermore, the project addresses various neuropsychological disorders, such as traumatic brain injury, stroke-related impairments, and neurodegenerative diseases. We examine the different diagnostic assessment methods used in clinical practice and the therapeutic interventions employed to assist patients with neurological and psychological problems. The project also covers the role of technology in neuropsychological research and the ethical considerations involved in the field. The aim is to create a detailed source suitable for those hoping to learn more about the field and those looking for a deep-dive on the subject.