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Anita van der Merwe UP Profile

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The ASHA Leader (A journal of the American Speech-Language and Hearing Association)

Publications by the Author on Apraxia of Speech

Van der Merwe, A. (1976). Articulatory developmental apraxia. Newsletter of the South African Society for Speech and Hearing, 198, 4-11.

Van der Merwe, A. (1980). Articulatory developmental apraxia. Newsletter of the South African Society for Speech and Hearing, 233, 13-20.

Van der Merwe, A. (1985). Treatment program for developmental apraxia of speech and other speech disorders (title translated). Pretoria: V&R.

Van der Merwe, A. (1986). The motor planning of speech in apraxia of speech (title translated). Doctoral dissertation, University of Pretoria.

Van der Merwe, A. (1997). A theoretical framework for the characterization of pathological speech sensorimotor control. In M.R. McNeil (Ed.), Clinical management of sensorimotor speech disorders. New York: Thieme.

Van der Merwe, A. (2007). Self-correction in apraxia of speech: The effect of treatment. Aphasiology, 21(6/7/8), 658-669.

Van der Merwe, A. (2009). A theoretical framework for the characterization of pathological speech sensorimotor control. In M.R. McNeil (Ed.), Clinical management of sensorimotor speech disorders (2nd ed.). New York: Thieme.

Van der Merwe, A. (2011). A speech motor learning approach to treating apraxia of speech: Rationale and effects of intervention with an adult with acquired apraxia of speech. Aphasiology, 25(10), p. 1174-1206.

Van der Merwe, A. (2021). New perspectives on speech motor planning and programming in the context of the four- level model and its implications for understanding the pathophysiology underlying apraxia of speech and other motor speech disorders, Aphasiology, 35:4, 397-423. Special Issue on AOS.

Van der Merwe, A., & Grimbeek, J. (2006). Variability of voice onset time, vowel duration and utterance duration in apraxia of speech. Stem-, Spraak- en Taalpathologie: 5th International Conference on Speech Motor Control Nijmegen: Abstracts, 14, Supplement June 72.

Van der Merwe A. & Grimbeek R.J. (1990). A comparison of the influence of certain contextual factors on the symptoms of acquired and developmental apraxia of speech (title translated). S.A. Journal of Communication Disorders, 37, pp 27-34.

Van der Merwe A. & Le Roux M. (2014). Dysarthria and apraxia of speech in selected African languages: Zulu and Tswana. In Miller N. & Lowit A. (Eds) Motor Speech Disorders: A Cross Language and Bilingual Perspective. Series: Communication Disorders Across Languages, Series Editors Muller N & Ball M.J. Clevedon, UK: Multilingual Matters Ltd. p. 125-142.

Van der Merwe, A., & Tesner, H. (2000). Apraxia of speech in a bilingual speaker: Perceptual characteristics and generalisation of non-language specific treatment. South African Journal of Communication Disorders. Special Edition: Communication Disorders in Multilingual Populations, 47, 79-89.

Van der Merwe, A., Uys, I. C., Loots, J. M., & Grimbeek, R. J. (1987). The influence of certain contextual factors on the perceptual symptoms of apraxia of speech (title translated). South African Journal of Communication Disorders, 34,10-22.

Van der Merwe, A., Uys, I.C., Loots, J.M., & Grimbeek, R.J. (1988). Perceptual symptoms of apraxia of speech: Indications of the nature of the disorder (title translated). South African Journal of Communication Disorders, 35, 45-54.

Van der Merwe, A., Uys, I. C., Loots, J. M., & Grimbeek, R. J., & Jansen L. P. C. (1989). The influence of certain contextual factors on voice onset time, vowel duration and utterance duration in apraxia of speech (title translated). South African Journal of Communication Disorders, 36, 29-41.

Van der Merwe, A., Le Roux, M. (2014). Dysarthria and Apraxia of Speech in Selected African Languages: Zulu and Tswana. In Miller, N., Lowit, A. (ed). Motor Speech Disorders: A Cross Language Perspective. Chapter 9. [Purchase Online]

Van der Merwe A. (2009). Worster-Drought Syndrome. In McNeil M.R. (Red.) Clinical Management of Sensorimotor Speech Disorders. 2nd Edition (New chapter). Thieme Medical Publishers: New York.

Van der Merwe A, Le Roux M (2014). Idiosyncratic sound systems of the South African Bantu languages: Research and clinical implications for speech-language pathologists and audiologists. South African Journal of Communication Disorders, 61 (1), p. 1-8.

Van der Merwe A, Steyn M. (2018). Model driven treatment of childhood apraxia of speech: Positive effects of the speech motor learning approach. American Journal of Speech-Language Pathology, 27(1), p. 37-51.

Van der Merwe A. & Steyn M. (2020). Production of click sounds in acquired apraxia of speech: A view to the motoric nature of the disorder. In B. Sands (Ed.). Click Consonants. Brill Publishers: Leiden, The Netherlands.

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Student Research and Publications

Barnes, M. (2000). Changes in coarticulatory cohesion in an apraxic speaker as a function of treatment. Undergraduate research report, University of Pretoria, South Africa.

Bodenstein A. (2001). Certain residual speech characteristics of children with developmental apraxia of speech in the post-treatment period. Masters’ dissertation, University of Pretoria.

Boshoff, R. (1991). Application of the treatment program for developmental apraxia of speech and other speech disorders on an adult who stutters: A case study (title translated). Undergraduate research report, University of Pretoria, South Africa.

Coetzee M. & De Jager L. (2011) Apraxia of speech in a multilingual speaker: Speech signs across languages. Undergraduate research report, University of Pretoria, South Africa.

Du Plooy, E. (1992). An investigation of the ordering of material in the treatment program for Developmental Apraxia of Speech and other Speech Disorders (title translated). Undergraduate research report, University of Pretoria, South Africa.

Erasmus I., Van der Merwe A. & Groenewald E. (1993). Speech sound distortion in neuromotor speech disorders: A comparison between cerebellar dysarthria and apraxia of speech (title translated). S.A. Journal of Communication Disorders, 40, pp 85-96.

Geldenhuys, P.C. (1983). Application of the treatment program for developmental apraxia of speech and other speech disorders on a child with a developmental phonological disorder (title translated). Undergraduate research report, University of Pretoria, South Africa.

Theron, K. (2003). Temporal aspects of speech production in bilingual speakers with neurogenic speech disorders. Doctoral thesis, University of Pretoria, South Africa.

Schmullian D., Van der Merwe A. & Groenewald E. (1997). An exploratory study of an undefined acquired neuromotor speech disorder within the context of the Four Level framework for Speech Sensorimotor Control. S.A. Journal of Communication Disorders. 44, pp 87-97.

Schmullian D. (2000). The development of a universal speech facilitation program as an extension of the speech motor learning program and its application in an experimental alternating treatment study. Masters’ dissertation, University of Pretoria.

Schultze-Hulbe P. (2011). A speech motor learning approach to treating apraxia of speech: Effects of intervention with a child with childhood apraxia of speech. Undergraduate research report, University of Pretoria, South Africa.

Stipinovich A, Van der Merwe A. (2007). Acquired dysarthria within the context of the four-level framework of speech sensorimotor control. SA Journal of Communication Disorders, 54, pp 67-76.

Theron K. (1994). The effect of speech rate alterations on certain aspects of articulatory timing in neurogenic speech disorders. Masters’ dissertation, University of Pretoria (Co-supervisor: Dr M.R. McNeil, University of Pittsburgh, USA).

Theron K., Van der Merwe A. & Baker M. (1995). Anticipatory labial coarticulation: An electromyographic study in Afrikaans speakers (title translated). S.A. Journal of Communication Disorders, 42, pp 35-48.

Theron, K, Van der Merwe A, Robin DR, Groenewald E. (2009). Temporal parameters of speech production in bilingual speakers with apraxic or phonemic paraphasic errors. Aphasiology, 23 (5), pp 557-583.

Jones G, Van der Merwe A., Van der Linde J, le Roux M. (2018). Development of a Setswana tonal minimal pair word list as research tool. South African Journal of African Languages, 38(2), p. 127-135.

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