Phonological Encoding and Monitoring in Normal and Pathological Speech

Phonological Encoding and Monitoring in Normal and Pathological Speech

Phonological Encoding and Monitoring in Normal and Pathological Speech

Phonological Encoding and Monitoring in Normal and Pathological Speech

Synopsis

This book reports recent research on mechanisms of normal formulation and control in speaking and in language disorders such as stuttering, aphasia and verbal dyspraxia. The theoretical claim is that such disorders result both from deficits in a component of the language production system and interactions between this component and the system that 'monitors' for errors and undertakes a corrective behaviour. In particular, the book focuses on phonological encoding in speech (the construction of a phonetic plan for utterances), on verbal self-monitoring (checking for correctness and initiating corrective action if necessary), and on interactions between these processes. Bringing together sixteen original chapters by leading international researchers, this volume represents a coherent statement of current thinking in this exciting field. The aim is to show how psycholinguistic models of normal speech processing can be applied to the study of impaired speech production. This book will prove invaluable to any researcher, student or speech therapist looking to bridge the gap between the latest advances in theory and the implications of these advances for language and speech pathology.

Excerpt

Sometimes we speak fluently, without any speech errors, pauses, repetitions, and so on. But on other occasions we are disfluent. This is especially so for speakers with certain speech or language pathologies such as stuttering, apraxia of speech, and aphasia. This book brings together research from various disciplines including speech-language pathology, linguistics, experimental psychology, and cognitive modeling. The aim is to better understand why speech is so often disfluent and whether there is continuum between “normal speech” and “pathological speech”. To do this, we test current proposals about the way speakers plan speech (phonological encoding) and about the way they inspect that speech is still going according to plan (self-monitoring). Our underlying assumption is that studying speech and language pathologies can inform us about normal speech planning, but that theories about normal planning can also inform us about the reasons for pathologies.

This book emanates from a research programme that started in 1996 under the direction of Frank Wijnen, Albert Postma, Roelien Bastiaanse, and Herman Kolk and a subsequent grant awarded to Ben Maassen. Both grants were awarded by NWO, the Netherlands' Organization for Scientific Research. The grant enabled Remca Burger, Nada Vasic, Dirk-Bart den Ouden, Claudy Oomen, Lian Nijland, and Rob Hartsuiker to conduct their research projects, which stood on the basis for several chapters in this volume. We are indebted to NWO for making this possible.

In addition to many fruitful meetings within this Groningen-Nijmegen- Utrecht consortium, we also organised an international workshop at the Max Planck Institute for Psycholinguistics in Nijmegen, 1999. Many of the authors were present at this workshop and presented papers that have led to chapters in the present book. We are very grateful to Pim Levelt for hosting that workshop and to all presenters, discussants, and participants who contributed to it.

Ghent, February 2004 . . .

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