All Stories

  1. Acoustic Measures of Word-Level Prosody in Childhood Apraxia of Speech: An Initial Validation Study

    Article • American Journal of Speech-Language Pathology, July 2025, American Speech-Language-Hearing Association (ASHA)

    Edwin Maas

  2. The Benefits of Conversation Group Treatment for Individuals With Chronic Aphasia: Updated Evidence From a Multisite Randomized Controlled Trial on Measures of Language and Communication

    Article • American Journal of Speech-Language Pathology, April 2025, American Speech-Language-Hearing Association (ASHA)

    Edwin Maas

  3. Research Priorities for Childhood Apraxia of Speech: A Long View

    Article • Journal of Speech Language and Hearing Research, August 2024, American Speech-Language-Hearing Association (ASHA)

    Dr Tricia McCabe, Edwin Maas, Dr Jonathan L Preston, Nancy Potter, Angela Morgan, Dr. Elaine R. Hitchcock, Dr. Eddy C. H. Wong

  4. Treatment for Childhood Apraxia of Speech: Past, Present, and Future

    Article • Journal of Speech Language and Hearing Research, May 2024, American Speech-Language-Hearing Association (ASHA)

    Edwin Maas

  5. A Comparison of Sound Production Treatment and Metrical Pacing Therapy for Apraxia of Speech: A Single-Case Experimental Design

    Article • American Journal of Speech-Language Pathology, September 2023, American Speech-Language-Hearing Association (ASHA)

    Dr. Julie L Wambaugh, Edwin Maas, Charlotte Purcell

  6. Neural Changes in Children With Residual Speech Sound Disorder After Ultrasound Biofeedback Speech Therapy

    Article • Journal of Speech Language and Hearing Research, July 2023, American Speech-Language-Hearing Association (ASHA)

    Edwin Maas, D. H. Whalen, Dr Jonathan L Preston

  7. Self-Reported Communication Attitudes of Children With Childhood Apraxia of Speech: An Exploratory Study

    Article • American Journal of Speech-Language Pathology, January 2023, American Speech-Language-Hearing Association (ASHA)

    Edwin Maas

  8. A Randomized Controlled Trial of the Effects of Group Conversation Treatment on Monologic Discourse in Aphasia

    Article • Journal of Speech Language and Hearing Research, December 2021, American Speech-Language-Hearing Association (ASHA)

    Edwin Maas

  9. Autism-Centered Therapy for Childhood Apraxia of Speech (ACT4CAS): A Single-Case Experimental Design Study

    Article • American Journal of Speech-Language Pathology, June 2021, American Speech-Language-Hearing Association (ASHA)

    Edwin Maas, Molly Beiting

  10. Neuroimaging of the Syllable Repetition Task in Children With Residual Speech Sound Disorder

    Article • Journal of Speech Language and Hearing Research, June 2021, American Speech-Language-Hearing Association (ASHA)

    Edwin Maas, Dr Jonathan L Preston

  11. Differential Diagnosis of Childhood Apraxia of Speech Compared to Other Speech Sound Disorders: A Systematic Review

    Article • American Journal of Speech-Language Pathology, January 2021, American Speech-Language-Hearing Association (ASHA)

    Edwin Maas, Dr Elizabeth J Murray, Jenya Iuzzini-Seigel, Prof Kirrie J Ballard

  12. Testing hypotheses about the underlying deficit of apraxia of speech through computational neural modelling with the DIVA model

    Article • International Journal of Speech-Language Pathology, October 2019, Taylor & Francis

    Edwin Maas, Joe Rodd

  13. Bang for Your Buck: A Single-Case Experimental Design Study of Practice Amount and Distribution in Treatment for Childhood Apraxia of Speech

    Article • Journal of Speech Language and Hearing Research, September 2019, American Speech-Language-Hearing Association (ASHA)

    Edwin Maas, Kathy Jakielski, Christina Gildersleeve-Neumann

  14. Two to Tango or the More the Merrier? A Randomized Controlled Trial of the Effects of Group Size in Aphasia Conversation Treatment on Standardized Tests

    Article • Journal of Speech Language and Hearing Research, May 2019, American Speech-Language-Hearing Association (ASHA)

    Edwin Maas

  15. Effects of group size on conversation treatment outcomes: results of standardized testing

    Article • Aphasiology, July 2018, Taylor & Francis

    Edwin Maas

  16. Variable Practice to Enhance Speech Learning in Ultrasound Biofeedback Treatment for Childhood Apraxia of Speech: A Single Case Experimental Study

    Article • American Journal of Speech-Language Pathology, August 2017, American Speech-Language-Hearing Association (ASHA)

    Dr Jonathan L Preston, Kerry McNamara, Edwin Maas

  17. Fricative Contrast and Coarticulation in Children With and Without Speech Sound Disorders

    Article • American Journal of Speech-Language Pathology, June 2017, American Speech-Language-Hearing Association (ASHA)

    Edwin Maas

  18. Speech and nonspeech: What are we talking about?

    Article • International Journal of Speech-Language Pathology, October 2016, Taylor & Francis

    Edwin Maas

  19. Intensive Treatment with Ultrasound Visual Feedback for Speech Sound Errors in Childhood Apraxia

    Article • Frontiers in Human Neuroscience, August 2016, Frontiers

    Edwin Maas

  20. Direction of attentional focus in biofeedback treatment for /r/ misarticulation

    Article • International Journal of Language & Communication Disorders, March 2016, Wiley

    Edwin Maas

  21. Limited acquisition and generalisation of rhotics with ultrasound visual feedback in childhood apraxia

    Article • Clinical Linguistics & Phonetics, August 2015, Taylor & Francis

    Edwin Maas, Dr Tricia McCabe

  22. Apraxia of speech systematic review

    Article • American Journal of Speech-Language Pathology, May 2015, American Speech-Language-Hearing Association (ASHA)

    Ph.D. Joseph R Duffy, Prof Kirrie J Ballard, Dr. Julie L Wambaugh, DR. Malcolm R McNeil, Edwin Maas

  23. Feedforward and Feedback Control in Apraxia of Speech: Effects of Noise Masking on Vowel Production

    Article • Journal of Speech Language and Hearing Research, April 2015, American Speech-Language-Hearing Association (ASHA)

    Edwin Maas

  24. Ultrasound Visual Feedback Treatment and Practice Variability for Residual Speech Sound Errors

    Article • Journal of Speech Language and Hearing Research, December 2014, American Speech-Language-Hearing Association (ASHA)

    Dr Jonathan L Preston, Dr Tricia McCabe, Edwin Maas

  25. Motor-Based Intervention Protocols in Treatment of Childhood Apraxia of Speech (CAS)

    Article • Current Developmental Disorders Reports, April 2014, Springer Science + Business Media

    Edwin Maas

  26. Phonological encoding in apraxia of speech and aphasia

    Article • Aphasiology, November 2013, Taylor & Francis

    Prof Kirrie J Ballard, Edwin Maas

  27. Covert contrast in child phonology is not necessarily extragrammatical

    Article • LSA Annual Meeting Extended Abstracts, May 2013, Semantics and Pragmatics

    Edwin Maas

  28. Speech Motor Programming in Apraxia of Speech: Evidence From a Delayed Picture-Word Interference Task

    Article • American Journal of Speech-Language Pathology, May 2013, American Speech-Language-Hearing Association (ASHA)

    Edwin Maas

  29. Speech Planning Happens Before Speech Execution: Online Reaction Time Methods in the Study of Apraxia of Speech

    Article • Journal of Speech Language and Hearing Research, October 2012, American Speech-Language-Hearing Association (ASHA)

    Edwin Maas

  30. Feedback Frequency in Treatment for Childhood Apraxia of Speech

    Article • American Journal of Speech-Language Pathology, August 2012, American Speech-Language-Hearing Association (ASHA)

    Edwin Maas

  31. Random Versus Blocked Practice in Treatment for Childhood Apraxia of Speech

    Article • Journal of Speech Language and Hearing Research, April 2012, American Speech-Language-Hearing Association (ASHA)

    Edwin Maas

  32. An investigation of the relation between sibilant production and somatosensory and auditory acuity

    Article • The Journal of the Acoustical Society of America, November 2010, Acoustical Society of America (ASA)

    Edwin Maas

  33. Conditions of Practice and Feedback in Treatment for Apraxia of Speech

    Article • Perspectives on Neurophysiology and Neurogenic Speech and Language Disorders, October 2010, American Speech-Language-Hearing Association (ASHA)

    Edwin Maas

  34. Effects of Feedback Frequency and Timing on Acquisition, Retention, and Transfer of Speech Skills in Acquired Apraxia of Speech

    Article • Journal of Speech Language and Hearing Research, October 2008, American Speech-Language-Hearing Association (ASHA)

    Prof Kirrie J Ballard, Edwin Maas

  35. Motor programming in apraxia of speech

    Article • Brain and Language, August 2008, Elsevier

    Prof Kirrie J Ballard, Edwin Maas

  36. Principles of Motor Learning in Treatment of Motor Speech Disorders

    Article • American Journal of Speech-Language Pathology, August 2008, American Speech-Language-Hearing Association (ASHA)

    Prof Kirrie J Ballard, Edwin Maas

  37. Treating control of voicing in apraxia of speech with variable practice

    Article • Aphasiology, December 2007, Taylor & Francis

    Prof Kirrie J Ballard, Edwin Maas

  38. Internal Versus External: Oral-Motor Performance as a Function of Attentional Focus

    Article • Journal of Speech Language and Hearing Research, February 2007, American Speech-Language-Hearing Association (ASHA)

    Edwin Maas

  39. The Influence of Language Exposure on Lexical and Syntactic Language Processing

    Article • Experimental Psychology (formerly Zeitschrift für Experimentelle Psychologie), January 2003, Hogrefe Publishing Group

    Edwin Maas

  40. Assessing comprehension and production of verbs and sentences: The Verb and Sentence Test (VAST)

    Article • Aphasiology, January 2003, Taylor & Francis

    Dr Judith Rispens, Edwin Maas

  41. Treatment of sound errors in aphasia and apraxia of speech: Effects of phonological complexity

    Article • Aphasiology, April 2002, Taylor & Francis

    Edwin Maas