Biography
Edwin Maas received a master's degree in neurolinguistics from the University of Groningen (the Netherlands), and worked as a clinical linguist at the Rotterdam Aphasia Foundation before pursuing his PhD in language and communicative disorders from San Diego State University and the University of California, San Diego. His early research focused on verb and sentence processing in aphasia and basic mechanisms of sentence comprehension. His interest in treatment research led him to shift focus to speech production and its disorders. To supplement his background and training in neurolinguistics, he obtained postdoctoral training at Boston University and the Massachusetts Institute of Technology with a focus on speech motor control. He joined Temple University’s Department of Communication Sciences and Disorders in 2015.
As Co-Director of the Speech, Language, and Brain Laboratory (SLAB Lab), he conducts research on speech production across the lifespan in unimpaired individuals and in various populations with speech and/or language disorders, such as aphasia, apraxia of speech, and phonological disorders. Two central, overarching questions motivate and drive this research: (1) What is the underlying nature of a given speech disorder? and (2) How can we optimize treatment for speech disorders?
Regarding the first question, research focuses on the various underlying mechanisms, representations and processes involved in generating speech, how these may be disrupted in speech disorders, and how we can identify and characterize such disruptions. This research line combines different methodologies, including perceptual speech error analysis, psycholinguistic reaction time studies, acoustic analysis, and neuropsychology. Regarding the second question, Dr. Maas conducts treatment studies to determine the efficacy of treatment for speech disorders, as well as to identify practice conditions that optimize speech motor learning (principles of motor learning derived from the motor skill learning literature). Both lines of research are theoretically motivated and have implications for models of normal speech production as well as for clinical practice, including diagnosis and treatment.
Education
- PhD, Language and Communicative Disorders, San Diego State University
- MA, Neurolinguistics, University of Groningen
- BA, Dutch Linguistics and Literature, University of Groningen
Labs: Slab Lab
Google Scholar: Edwin Maas's Google Scholar profile
Courses Taught
Number | Name | Level |
|---|---|---|
CHP 3386 | Diamond Peer Teachers - Internship II | Undergraduate |
CSCD 2201 | Research Methods in Communication Sciences | Undergraduate |
CSCD 4979 | Honors in Communication Sciences | Undergraduate |
CSCD 5524 | Foundations and Management of Motor Speech Disorders | Graduate |
Selected Publications
Recent
Spencer, C., Vannest, J., Maas, E., Preston, J., Redle, E., Maloney, T., & Boyce, S. (2021). Neuroimaging of the syllable repetition task in children with residual speech sound disorder. Journal of Speech, Language, and Hearing Research, 64(6s), 2223-2233. doi: 10.1044/2020_JSLHR-20-00269.
Mailend, M. & Maas, E. (2021). To lump or to split? Possible subtypes of apraxia of speech. Aphasiology, 35(4), 592-613. doi: 10.1080/02687038.2020.1836319.
Mailend, M., Maas, E., Beeson, P., Story, B., & Forster, K. (2021). Examining speech motor planning difficulties in apraxia of speech and aphasia via the sequential production of phonetically similar words. Cognitive Neuropsychology, 38(1), 72-87. doi: 10.1080/02643294.2020.1847059.
Murray, E., Iuzzini-Seigel, J., Maas, E., Terband, H., & Ballard, K. (2021). Differential diagnosis of childhood apraxia of speech compared to other speech sound disorders: A systematic review. American Journal of Speech-Language Pathology, 30(1), 279-300. doi: 10.1044/2020_AJSLP-20-00063.
Beiting, M. & Maas, E. (2021). Autism-centered therapy for childhood apraxia of speech (Act4cas): A single-case experimental design study. American Journal of Speech-Language Pathology, 30(3s), 1525-1541. doi: 10.1044/2020_AJSLP-20-00131.
Terband, H., Rodd, J., & Maas, E. (2020). Testing hypotheses about the underlying deficit of apraxia of speech through computational neural modelling with the DIVA model. International Journal of Speech-Language Pathology, 22(4), 475-486. doi: 10.1080/17549507.2019.1669711.
Terband, H., Maassen, B., & Maas, E. (2019). A Psycholinguistic Framework for Diagnosis and Treatment Planning of Developmental Speech Disorders. Folia Phoniatrica Et Logopaedica, 71(5-6), 216-227. doi: 10.1159/000499426.
Maas, E., Gildersleeve-Neumann, C., Jakielski, K., Kovacs, N., Stoeckel, R., Vradelis, H., & Welsh, M. (2019). Bang for your buck: A single-case experimental design study of practice amount and distribution in treatment for childhood apraxia of speech. Journal of Speech, Language, and Hearing Research, 62(9), 3160-3182. doi: 10.1044/2019_JSLHR-S-18-0212.
Terband, H., Namasivayam, A., Maas, E., Brenk, F.v., Mailend, M., Diepeveen, S., Lieshout, P.v., & Maassen, B. (2019). Assessment of childhood apraxia of speech: A review/tutorial of objective measurement techniques. Journal of Speech, Language, and Hearing Research, 62(8S), 2999-3032. doi: 10.1044/2019_JSLHR-S-CSMC7-19-0214.
Maassen, B., Terband, H., Maas, E., & Namasivayam, A. (2019). Preface to the special issue: Select papers from the 7th international conference on speech motor control. Journal of Speech, Language, and Hearing Research, 62(8S), 2923-2625. doi: 10.1044/2019_JSLHR-S-CSMC7-19-0247.
DeDe, G., Hoover, E., & Maas, E. (2019). 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. Journal of Speech, Language, and Hearing Research, 62(5), 1437-1451. doi: 10.1044/2019_JSLHR-L-18-0404.
Mailend, M., Maas, E., Beeson, P., Story, B., & Forster, K. (2019). Speech motor planning in the context of phonetically similar words: Evidence from apraxia of speech and aphasia. Neuropsychologia, 127, 171-184. doi: 10.1016/j.neuropsychologia.2019.02.018.
Hoover, E.L., DeDe, G., & Maas, E. (2018). Effects of group size on conversation treatment outcomes: results of standardized testing. Aphasiology, 32(sup1), 93-95. doi: 10.1080/02687038.2018.1487004.
Maas, E. (2017). Speech and nonspeech: What are we talking about? International Journal of Speech-Language Pathology, 19(4), 345-359. doi: 10.1080/17549507.2016.1221995.
Maas, E. & Mailend, M. (2017). Fricative contrast and coarticulation in children with and without speech sound disorders. American Journal of Speech-Language Pathology, 26(2Special Issue), 649-663. doi: 10.1044/2017_AJSLP-16-0110.
Preston, J., Leece, M., McNamara, K., & Maas, E. (2017). Variable practice to enhance speech learning in ultrasound biofeedback treatment for childhood apraxia of speech: A single case experimental study. American Journal of Speech-Language Pathology, 26(3), 840-852. doi: 10.1044/2017_AJSLP-16-0155.
Preston, J., Leece, M., & Maas, E. (2017). Motor-based treatment with and without ultrasound feedback for residual speech-sound errors. International Journal of Language and Communication Disorders, 52(1), 80-94. doi: 10.1111/1460-6984.12259.
Maas, E. (2017). Principles of motor learning in treatment for apraxia of speech. Frontiers in Human Neuroscience, 11. doi: 10.3389/conf.fnhum.2017.223.00094.