Macquarie University
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The right word at the right time: lexical retrieval treatment in primary progressive aphasia

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posted on 2022-03-29, 03:16 authored by Karen Philippa Croot
Word-finding difficulty is typically an early and frustrating symptom in primary progressive aphasia (PPA). This thesis reports a case series of single case experimental design studies of word-finding treatment with 10 individuals with PPA. It examines treatment gains, maintenance of gains, and generalisation of gains to untreated items and a semi-structured interview. We observed a range of outcomes and adherence patterns under the same treatment protocol and describe disease and participant factors associated with these outcomes. The thesis also presents resources to assist with clinical decision-making about the suitability of lexical retrieval treatment for individuals with PPA.


Table of Contents

Chapter 1. Introduction -- Chapter 2. Lexical retrieval treatment in primary progressive aphasia : an investigation of treatment duration in a heterogenous case series -- Chapter 3. Measuring gains in connected speech following treatment for word retrieval : a study with two participants with primary progressive aphasia -- Chapter 4. What's the evidence? Evidence for speech, language and communication interventions in progressive aphasia -- Chapter 5. Treatment for lexical retrieval impairments in primary progressive aphasia : a research update with implications for clinical practice -- Chapter 6. The right word at the right time? General discussion -- Appendices.


Includes bibliographical references "Thesis submitted in partial fulfilment of the requirements of the degree of Doctor of Psychology (Clinical Neuropsychology), Department of Cognitive Science, Department of Psychology, and Australian Research Council Centre of Excellence in Cognition and its Disorders Macquarie University" -- title page. Thesis by publication.

Awarding Institution

Macquarie University

Degree Type

Thesis DPsych


PhD, Macquarie University, Faculty of Human Sciences, Department of Cognitive Science

Department, Centre or School

Department of Cognitive Science

Year of Award


Principal Supervisor

Lyndsey Nickels


Copyright Karen Philippa Croot 2018. Copyright disclaimer:




1 online resource (xii, 244 pages) tables

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