The long-held belief that acquired aphasia in children is primarily of the non-fluent type has been challenged in recent years. This book discusses language problems arising from cerebro-vascular accidents occurring in childhood, and from other

Neuropsychology has its roots in clinical neurology. Reading case de scriptions by 19th century neurologists, such as Wernicke's painstakingly detailed examinations of patients with the "aphasic symptom-complex," makes it obvious that neuropsychology is not a new discipline. Even the marriage with psychology is not new; the neurologist Arnold Pick, for example, was fully conversant with the developments in contemporary psychological as well as linguistic research. However, the primary focus of 19th and early 20th century psychology was on "general psychology," and only a small number of psychologists ventured into what then was called "differential psychology" (the psychology of individual dif ferences) including a few who became attached to neurological research and rehabilitation units after World War I. It remained until World War II for psychologists to establish a more solid working relationship with neurology. What psychology had to offer to neurology was its experimental skill, the development of a sophisticated methodology, and, for clinical work, the development of psychometrics. On the whole, the marriage between the two disciplines has been fruitful, leading to new insights, models, and discoveries about brain-behavior relationships, documented in several textbooks which appeared in rapid succession since the 1960s. In clinical practice, neuropsychology has been inventive in some respects, in others merely introducing psychometric rigor to already existing neurological examinations. As described in greater detail in this book, developmental neuropsy chology is of even more recent origin.

This special issue of Aphasiology represents the papers accepted for publication which were among those presented at the 34th Clinical Aphasiology Conference, held in Park City Utah in 2004. They have been peer-reviewed and selected by a distinguished group of ad-hoc editorial consultants from among the considerably larger number of papers and posters presented at the meeting itself.

This handbook includes an overview of those areas of cognition and language processing that are relevant to the field of communication disorders, and provides examples of theoretical approaches to problems and issues in communication disorders. The first section includes a collection of chapters that outline some of the basic considerations and areas of cognition and language that underlie communication processing; a second section explains and exemplifies some of the influential theories of psycholinguistic/cognitive processing; and the third section illustrates theoretical applications to clinical populations. There is coverage of theories that have been either seminal or controversial in the research of communication disorders. Given the increasing multi-cultural workload of many practitioners working with clinical populations, chapters relating to bilingual populations are also included. The volume book provides a single interdisciplinary source where researchers and students can access information on psycholinguistic and cognitive processing theories relevant to clinical populations. A range of theories, models, and perspectives are provided. The range of topics and issues illustrate the relevance of a dynamic interaction between theoretical and applied work, and retains the complexity of psycholinguistic and cognitive theory for readers (both researchers and graduate students) whose primary interest is the field of communication disorders.