Advances in the field of cognitive neuropsychology have provided a range of techniques for exploring impairments in basic mental functions such as attention, memory, and language. Such an approach has been adopted with considerable success in the investigation of the dementias, in particular Alzheimer's disease. This book draws together recent developments in the neuropsychology of Alzheimer-type dementia, relating these to the neurobiology of the disease, and to the practical issues regarding patient care. The first part of the book provides a theoretical overview of the different approaches to research, including issues of diagnosis, the use of case studies, and how to chart progress of cognitive decline. The second part focuses on the main aspects of cognition. The third part looks at the relationship between cognitive decline and the neurodegenerative changes in the brains of Alzheimer's disease patients. A final section considers the clinical implications of this cognitive research, regarding issues of diagnosis, cognitive rehabilitation, and pharmacological treatment.