This core text for occupational therapists sets out the problems that arise as a result of perceptual and cognitive changes, and how these can be assessed by occupational therapists. The background theory of perception and cognition is presented in a readable style, and is related to the varied problems encountered in everyday life by people with brain damage or with degenerative diseases of the nervous system. Appropriate assessment procedures which form the basis of treatment planning are explained, and the book ends with a description of evaluation and research methodology in occupational therapy.