Efficacy of Speech Output Technologies in Interventions for Persons with Aphasia: A Scoping Review

References

• Aftonomos, L. B., Steele, R. D., Appelbaum, J. S., & Harris, V. M. (2001). Relationships between impairment-level assessments and functional-level assessments in aphasia: Findings from LCC treatment programmes. Aphasiology, 15(10–11), 951–964. https://doi.org/10.1080/02687040143000311
   Web of Science ®Google Scholar
• Alam, N., Munjal, S., Panda, N. K., Kumar, R., & Gupta, S. (2021). Efficacy of Jellow app as an adjunct to stimulation therapy in improvement in language and quality of life in patients with chronic Broca’s Aphasia. Disability and Rehabilitation: Assistive Technology, 1–7. https://doi.org/10.1080/17483107.2021.1892844
   Web of Science ®Google Scholar
• *Albright, E., & Purves, B. (2008). Exploring SentenceShaper™: Treatment and augmentative possibilities. Aphasiology, 22(7–8), 741–752. https://doi.org/10.1080/02687030701803770
   Web of Science ®Google Scholar
• Arvedson, J. C., & McNeil, M. R. (1987). Accuracy and response times for semantic judgements and lexical decisions with left-and right-hemisphere lesions. Clinical Aphasiology, 17, 188–201.
   Google Scholar
• *Bartlett, M. R., Fink, R. B., Schwartz, M. F., & Linebarger, M. (2007). Informativeness ratings of messages created on an AAC processing prosthesis. Aphasiology, 21(5), 475–498. https://doi.org/10.1080/02687030601154167
   PubMed Web of Science ®Google Scholar
• Beukelman, D. R., & Ball, L. J. (2002). Improving AAC use for persons with acquired neurogenic disorders: understanding human and engineering factors. Assistive Technology, 14(1), 33–44. https://doi.org/10.1080/10400435.2002.10132053
   PubMedGoogle Scholar
• Beukelman, D. R., Hux, K., Dietz, A., McKelvey, M., & Weissling, K. (2015). Using visual scene displays as communication support options for people with chronic, severe aphasia: A summary of AAC research and future research directions. Augmentative and Alternative Communication, 31(3), 234–245. https://doi.org/10.3109/07434618.2015.1052152
   PubMed Web of Science ®Google Scholar
• Blomert, L. (1992). The Amsterdam—Nijmegen Everyday Language Test (ANELT). In Neuropsychological Rehabilitation (pp. 121–127). Springer, Berlin, Heidelberg.
   Google Scholar
• *Brock, K., Koul, R., Corwin, M., & Schlosser, R. (2017). A comparison of visual scene and grid displays for people with chronic aphasia: A pilot study to improve communication using AAC. Aphasiology, 31(11), 1282–1306. https://doi.org/10.1080/02687038.2016.1274874
   Web of Science ®Google Scholar
• Buzolich, M. J. (2006). Augmentative and alternative communication (AAC) assessment: Adult aphasia. Perspectives on Neurophysiology and Neurogenic Speech and Language Disorders, 16(4), 4–12. https://doi.org/10.1044/nnsld16.4.4
   Google Scholar
• Chavers, T., Cheng, C., & Koul, R. (2021). AAC Interventions in Persons with Aphasia. In B. T. Ogletree (Eds.), Augmentative and Alternative Communication: Challenges and Solutions. Plural Publishing.
   Google Scholar
• Chazin, Ledford, J. R., & Pak, N. S. (2021). A Systematic Review of Augmented Input Interventions and Exploratory Analysis of Moderators. American Journal of Speech-Language Pathology, 30(3), 1210–1223. https://doi.org/10.1044/2020_AJSLP-20-00102
   PubMed Web of Science ®Google Scholar
• Chiou, H. S., & Kennedy, M. R. (2009). Switching in adults with aphasia. Aphasiology, 23(7–8), 1065–1075. https://doi.org/10.1080/02687030802642028
   Web of Science ®Google Scholar
• Code, C., & Petheram, B. (2011). Delivering for aphasia. International Journal of Speech-Language Pathology, 13(1), 3–10. https://doi.org/10.3109/17549507.2010.520090
   PubMed Web of Science ®Google Scholar
• Cohen, J. (1969). Statistical power analysis for the behavioral sciences. Academic Press.
   Google Scholar
• Cohen, J. (1988). Statistical power analysis for the behavioral sciences (2nd ed.). Lawrence Erlbaum Associates.
   Google Scholar
• Cooper, H., & Hedges, L. (1994). Research synthesis as a scientific enterprise. Russell Sage Foundation. https://doi.org/10.7758/9781610441377.5
   Google Scholar
• Dada, S., Flores, C., Bastable, K., & Schlosser, R. W. (2020). The effects of augmentative and alternative communication interventions on the receptive language skills of children with developmental disabilities: A scoping review. International Journal of Speech-Language Pathology, 23(3), 247–257. https://doi.org/10.1080/17549507.2020.1797165
   PubMed Web of Science ®Google Scholar
• Dada, S., Stockley, N., Wallace, S.E., & Koul, R. (2019). The effect of augmented input on the auditory comprehension of narratives for people with aphasia: A pilot investigation. Augmentative and Alternative Communication, 35(2), 148–155 https://doi.org/10.1080/07434618.2019.1576766
   PubMed Web of Science ®Google Scholar
• Dietz, A., McKelvey, M., & Beukelman, D. R. (2006). Visual scene displays (VSD): New AAC interfaces for persons with aphasia. Perspectives on Augmentative and Alternative Communication, 15(1), 13–17. https://doi.org/10.1044/aac15.1.13
   Google Scholar
• *Dietz, A., Vannest, J., Maloney, T., Altaye, M., Holland, S., & Szaflarski, J. P. (2018). The feasibility of improving discourse in people with aphasia through AAC: Clinical and functional MRI correlates. Aphasiology, 32(6), 693–719. https://doi.org/10.1080/02687038.2018.1447641
   PubMed Web of Science ®Google Scholar
• Dietz, A., Wallace, S. E., & Weissling, K. (2020). Revisiting the role of augmentative and alternative communication in aphasia rehabilitation. American Journal of Speech-Language Pathology, 29(2), 909–913. https://doi.org/10.1044/2019_AJSLP-19-00041
   PubMed Web of Science ®Google Scholar
• *Dietz, A., Weissling, K., Griffith, J., McKelvey, M., & Macke, D. (2014). The impact of interface design during an initial high-technology AAC experience: A collective case study of people with aphasia. Augmentative and Alternative Communication, 30(4), 314–328. https://doi.org/10.3109/07434618.2014.966207
   PubMed Web of Science ®Google Scholar
• Ellman, R. J. (2005). Social and life participation approaches to aphasia intervention. In: L. L. LaPointe (Ed.), Aphasia and related neurogenic language disorders (3rd ed., pp. 39–50). New York: Thieme Publishers.
   Google Scholar
• Engelter, S. T., Gostynski, M., Papa, S., Frei, M., Born, C., Ajdacic-Gross, V., Gutzwiller, F., & Lyrer, P. A. (2006). Epidemiology of aphasia attributable to first ischemic stroke: incidence, severity, fluency, etiology, and thrombolysis. Stroke, 37(6), 1379–1384. https://doi.org/10.1161/01.STR.0000221815.64093.8c
   PubMed Web of Science ®Google Scholar
• Frankel, T., Penn, C., & Ormond‐Brown, D. (2007). Executive dysfunction as an explanatory basis for conversation symptoms of aphasia: A pilot study. Aphasiology, 21(6–8), 814–828. https://doi.org/10.1080/02687030701192448
   Web of Science ®Google Scholar
• Frankoff, D. J., & Hatfield, B. (2011). Augmentative and alternative communication in daily clinical practice: strategies and tools for management of severe communication disorders. Topics in Stroke Rehabilitation, 18(2), 112–119. https://doi.org/10.1310/tsr1802-112
   PubMed Web of Science ®Google Scholar
• Garrett, K., & Lasker, J. (2005). Adults with severe aphasia. In: D.R. Beukelman & P. Mirenda (Eds.), Augmentative and alternative communication: Supporting children and adults with complex communication needs (3rd ed.) Baltimore, MD: Paul H. Brookes.
   Google Scholar
• Goodglass, H., Kaplan, E., & Barresi, B. (2000). The Boston Diagnostic Aphasia Examination (3rd ed.). Lea & Febiger.
   Google Scholar
• Helm-Estabrooks, N. (2001). Cognitive linguistic quick test: CLQT. Psychological Corporation.
   Google Scholar
• Hinkle, D. E., Wiersma, W., & Jurs, S. G. (2003). Applied statistics for the behavioral sciences (Vol. 663). Houghton Mifflin Division.
   Google Scholar
• Hunt, K. W. (1970). Syntactic maturity in school children and adults. Monographs of the Society for Research in Child Development, 35(1), iii–67. https://doi.org/10.2307/1165818
   Web of Science ®Google Scholar
• Hux, K., Knollman-Porter, K., Brown, J., & Wallace, S. E. (2017). Comprehension of synthetic speech and digitized natural speech by adults with aphasia. Journal of Communication Disorders, 69, 15–26. https://doi.org/10.1016/j.jcomdis.2017.06.006
   PubMed Web of Science ®Google Scholar
• Kent-Walsh, J., Murza, K. A., Malani, M. D., & Binger, C. (2015). Effects of communication partner instruction on the communication of individuals using AAC: A meta-analysis. Augmentative and Alternative Communication, 31(4), 271–284. https://doi.org/10.3109/07434618.2015.1052153
   PubMed Web of Science ®Google Scholar
• Kertesz, A. (2006). Western Aphasia Battery-Revised: WAB-R. Pro–Ed.
   Google Scholar
• Koul, R. (2011). Augmentative and alternative communication for adults with aphasia: Science and clinical practice. Brill.
   Google Scholar
• *Koul, R., Corwin, M., & Hayes, S. (2005). Production of graphic symbol sentences by individuals with aphasia: Efficacy of a computer-based augmentative and alternative communication intervention. Brain and Language, 92(1), 58–77. https://doi.org/10.1016/j.bandl.2004.05.008
   PubMed Web of Science ®Google Scholar
• Koul, R., & Corwin, M. (2003). Efficacy of AAC intervention in chronic severe aphasia. In R.W. Schlosser, H.H. Arvidson, & L.L. Lloyd, (Eds.), The efficacy of augmentative and alternative communication: Toward evidence-based practice (pp. 449–470). San Diego, CA: Academic Press.
   Google Scholar
• *Koul, R., Corwin, M., Nigam, R., & Oetzel, S. (2008). Training individuals with chronic severe Broca’s aphasia to produce sentences using graphic symbols: Implications for AAC intervention. Journal of Enabling Technologies, 2(1), 23. https://doi.org/10.1108/17549450200800004
   Google Scholar
• Koul, R., & Dembowski, J. (2011). Synthetic Speech Perception in Individuals with Intellectual and Communicative Disabilities. In I. Management Association (Ed.), Clinical Technologies: Concepts, Methodologies, Tools and Applications (pp. 1554-1565). IGI Global. https://doi.org/10.4018/978-1-60960-561-2.ch511
   Google Scholar
• *Koul, R., & Harding, R. (1998). Identification and production of graphic symbols by individuals with aphasia: Efficacy of a software application. Augmentative and Alternative Communication, 14(1), 11–24. https://doi.org/10.1080/07434619812331278166
   Google Scholar
• Koul, R., Petroi, D., & Schlosser, R. (2010). Systematic review of speech generating devices for aphasia. In Computer synthesized speech technologies: Tools for aiding impairment (pp. 148-160). IGI Global.
   Google Scholar
• *Linebarger, M. C., Romania, J. F., Fink, R. B., Bartlett, M. R., & Schwartz, M. F. (2008). Building on residual speech: A portable processing prosthesis for aphasia. Journal of Rehabilitation Research & Development, 45(9), 1401–1414. https://doi.org/10.1682/JRRD.2007.10.0171
   PubMedGoogle Scholar
• Lomas, J., Pickard, L., Bester, S., Elbard, H., Finlayson, A., & Zoghaib, C. (1989). The communicative effectiveness index: Development and psychometric evaluation of a functional communication measure for adult aphasia. Journal of Speech and Hearing Disorders, 54(1), 113–124. https://doi.org/10.1044/jshd.5401.113
   PubMedGoogle Scholar
• McCall, D., Shelton, J. R., Weinrich, M., & Cox, D. (2000). The utility of computerized visual communication for improving natural language in chronic global aphasia: Implications for approaches to treatment in global aphasia. Aphasiology, 14(8), 795–826. https://doi.org/10.1080/026870300412214
   Web of Science ®Google Scholar
• McKelvey, M. L., Dietz, A. R., Hux, K., Weissling, K., & Beukelman, D. R. (2007). Performance of a person with chronic aphasia using personal and contextual pictures in a visual scene display prototype. Journal of Medical Speech Language Pathology, 15(3), 305.
   Google Scholar
• Mooney, A., Bedrick, S., Noethe, G., Spaulding, S., & Fried-Oken, M. (2018). Mobile technology to support lexical retrieval during activity retell in primary progressive aphasia. Aphasiology, 32(6), 666–692. https://doi.org/10.1080/02687038.2018.1447640
   Web of Science ®Google Scholar
• Munn, Peters, M. D. J., Stern, C., Tufanaru, C., McArthur, & Aromataris, E. (2018). Systematic review or scoping review? Guidance for authors when choosing between a systematic or scoping review approach. BMC Medical Research Methodology, 18(1), 143–143. https://doi.org/10.1186/s12874-018-0611-x
   PubMed Web of Science ®Google Scholar
• Murray, L. L. (2012). Attention and other cognitive deficits in aphasia: Presence and relation to language and communication measures. American Journal of Speech-Language Pathology, 21(2), S51–S64. https://doi.org/10.1044/1058-0360(2012/11-0067)
   PubMed Web of Science ®Google Scholar
• Murray, L. L. (2017). Design fluency subsequent to onset of aphasia: a distinct pattern of executive function difficulties?. Aphasiology, 31(7), 793–818. https://doi.org/10.1080/02687038.2016.1261248
   Web of Science ®Google Scholar
• Murray, L. L., Holland, A. L., & Beeson, P. M. (1997a). Grammaticality judgements of mildly aphasic individuals under dual-task conditions. Aphasiology, 11(10), 993–1016. https://doi.org/10.1080/02687039708249423
   Web of Science ®Google Scholar
• Murray, L. L., Holland, A. L., & Beeson, P. M. (1997b). Auditory processing in individuals with mild aphasia: A study of resource allocation. Journal of Speech, Language, and Hearing Research, 40(4), 792–808. https://doi.org/10.1044/jslhr.4004.792
   PubMed Web of Science ®Google Scholar
• Murray, L. L., Holland, A. L., & Beeson, P. M. (1997c). Accuracy monitoring and task demand evaluation in aphasia. Aphasiology, 11(4–5), 401–414. https://doi.org/10.1080/02687039708248480
   Web of Science ®Google Scholar
• National Institute on Deafness and Other Communication Disorders. (2015). NIDCD fact sheet: Aphasia [PDF] [NIH Pub. No. 97-4257]. https://www.nidcd.nih.gov/sites/default/files/Documents/health/voice/Aphasia6-1-16.pdf
   Google Scholar
• Navon, D., & Miller, J. (2002). Queuing or sharing? A critical evaluation of the single-bottleneck notion. Cognitive Psychology, 44(3), 193–251. https://doi.org/10.1006/cogp.2001.0767
   PubMed Web of Science ®Google Scholar
• Nicholas, L. E., & Brookshire, R. H. (1993). A system for quantifying the informativeness and efficiency of the connected speech of adults with aphasia. Journal of Speech, Language, and Hearing Research, 36(2), 338–350.
   Web of Science ®Google Scholar
• Nicholas, M., & Connor, L. T. (2017). People with aphasia using AAC: Are executive functions important?. Aphasiology, 31(7), 819–836. https://doi.org/10.1080/02687038.2016.1258539
   Web of Science ®Google Scholar
• *Nicholas, M., Sinotte, M., & Helm-Estabrooks, N. (2005). Using a computer to communicate: Effect of executive function impairments in people with severe aphasia. Aphasiology, 19(10–11), 1052–1065. https://doi.org/10.1080/02687030544000245
   Web of Science ®Google Scholar
• *Nicholas, M., Sinotte, M. P., & Helm-Estabrooks, N. (2011). C-Speak Aphasia alternative communication program for people with severe aphasia: Importance of executive functioning and semantic knowledge. Neuropsychological Rehabilitation, 21(3), 322–366. https://doi.org/10.1080/09602011.2011.559051
   PubMed Web of Science ®Google Scholar
• Olsson, C., Arvidsson, P., & Blom Johansson, M. (2019). Relations between executive function, language, and functional communication in severe aphasia. Aphasiology, 33(7),821–845. https://doi.org/10.1080/02687038.2019.1602813
   Web of Science ®Google Scholar
• Pawliuk, C., Brown, H. L., Widger, K., Dewan, T., Hermansen, A.-M., Gregoire, M.-C., Steele, R., & Siden, H. (2021). Optimizing the process for conducting scoping reviews. BMJ Evidence-Based Medicine, 26(6),312–316. https://doi.org/10.1136/bmjebm-2020-111452
   PubMedGoogle Scholar
• Pampoulou, E. (2019). Speech and language therapists’ views about AAC system acceptance by people with acquired communication disorders. Disability and Rehabilitation: Assistive Technology, 14(5), 471–478. https://doi.org/10.1080/17483107.2018.1463401
   PubMed Web of Science ®Google Scholar
• Pashler, H. (1984). Processing stages in overlapping tasks: evidence for a central bottleneck. Journal of Experimental Psychology: Human Perception and Performance, 10(3), 358. https://psycnet.apa.org/doi/10.1037/0096-1523.10.3.358
   PubMed Web of Science ®Google Scholar
• Parker, R. I., & Vannest, K. (2009). An improved effect size for single-case research: Nonoverlap of all pairs. Behavior Therapy, 40(4), 357–367. https://doi.org/10.1016/j.beth.2008.10.006
   PubMed Web of Science ®Google Scholar
• *Petroi, D., Koul, R. K., & Corwin, M. (2014). Effect of number of graphic symbols, levels, and listening conditions on symbol identification and latency in persons with aphasia. Augmentative and Alternative Communication, 30(1), 40–54. https://doi.org/10.3109/07434618.2014.882984
   PubMed Web of Science ®Google Scholar
• Purdy, M. (2002). Executive function ability in persons with aphasia. Aphasiology, 16(4–6), 549–557. https://doi.org/10.1080/02687030244000176
   Google Scholar
• Renvall, K., Nickels, L., & Davidson, B. (2013). Functionally relevant items in the treatment of aphasia (part I): Challenges for current practice. Aphasiology, 27(6), 636–650. https://doi.org/10.1080/02687038.2013.786804
   Web of Science ®Google Scholar
• *Rostron, A., Ward, S., & Plant, R. (1996). Computerised augmentative communication devices for people with dysphasia: design and evaluation. European Journal of Disorders of Communication, 31(1), 11–30.
   Google Scholar
• Rothstein, R., Sutton, A. J., & Borenstein, M. (2005). Publication bias in meta-analysis: Prevention, assessment and adjustments. West Sussex, UK: John Wiley and Sons Ltd.
   Google Scholar
• Russo, M. J., Prodan, V., Meda, N. N., Carcavallo, L., Muracioli, A., Sabe, L., Bonamico, L., Allegri, R., & Olmos, L. (2017). High-technology augmentative communication for adults with post-stroke aphasia: A systematic review. Expert Review of Medical Devices, 14(5), 355–370. https://doi.org/10.1080/17434440.2017.1324291
   PubMed Web of Science ®Google Scholar
• Schlosser, R. W., & Koul, R. K. (2015). Speech output technologies in interventions for individuals with autism spectrum disorders: A scoping review. Augmentative and Alternative Communication, 31(4), 285–309. https://doi.org/10.3109/07434618.2015.1063689
   PubMed Web of Science ®Google Scholar
• Schlosser, R.W., & Raghavendra, P. (2003). Toward evidence-based practice in AAC. In R.W. Schlosser, H.H. Arvidson, & L.L. Lloyd, (Eds.), The efficacy of augmentative and alternative communication: Toward evidence-based practice (pp. 259–297). San Diego, CA: Academic Press.
   Google Scholar
• Schlosser, R. W., & Sigafoos, J. (2009). Navigating evidence-based information sources in augmentative and alternative communication. Augmentative and Alternative Communication, 25(4), 225–235. https://doi.org/10.3109/07434610903360649
   PubMed Web of Science ®Google Scholar
• Schlosser, & Wendt, O. (2008). Effects of augmentative and alternative communication intervention on speech production in children with autism: A systematic review. American Journal of Speech-Language Pathology, 17(3), 212–230. https://doi.org/10.1044/1058-0360(2008/021)
   PubMed Web of Science ®Google Scholar
• Schlosser, R. W., Sigafoos, J., & Koul, R. K. (2009). Speech output and speech-generating devices in autism spectrum disorders. In P. Mirenda & T. Iacono (Eds.) Autism spectrum disorders and AAC (pp. 141–170). Baltimore, MD: Paul H. Brookes.
   Google Scholar
• Schlosser, R. W., Wendt, O., Angermeier, K. L., & Shetty, M. (2005). Searching for evidence in augmentative and alternative communication: Navigating a scattered literature. Augmentative and Alternative Communication, 21(4), 233–255. https://doi.org/10.1080/07434610500194813
   Web of Science ®Google Scholar
• Schlosser, R. W., Wendt, O., Bhavnani, S., & Nail-Chiwetalu, B. J. (2006). The use of information seeking strategies in evidence-based practice: The case of pearl growing. International Journal of Language and Communication Disorders, 41, 567–582. https://doi.org/10.1080/1368280600742190
   PubMed Web of Science ®Google Scholar
• Schlosser, R. W., Wendt, O., & Sigafoos, J. (2007). Not all systematic reviews are created equal: Considerations for appraisal. Evidence-Based Communication Assessment and Intervention, 1(3), 138–150. https://doi.org/10.1080/17489530701560831
   Google Scholar
• *Steele, R. D., Aftonomos, L. B., & Koul, R. K. (2010). Outcome improvements in persons with chronic global aphasia following the use of a speech-generating device. Acta Neuropsychologica, 8(4), 342–359.
   Google Scholar
• Stevens, S. (1975). Psychophysics: introduction to its perceptual, neural, and social prospects. Edited by Geraldine Stevens. Wiley.
   Google Scholar
• Taylor, S., Wallace, S. J., & Wallace, S. E. (2019). High-technology augmentative and alternative communication in poststroke aphasia: A review of the factors that contribute to successful augmentative and alternative communication use. Perspectives of the ASHA Special Interest Groups, 4(3), 464–473. https://doi.org/10.1044/2019_PERS-SIG2-2018-0016
   Google Scholar
• Tricco, A. C., Lillie, E., Zarin, W., O’Brien, K. K., Colquhoun, H., Levac, D., … & Straus, S. E. (2018). PRISMA extension for scoping reviews (PRISMA-ScR): checklist and explanation. Annals of internal medicine, 169(7), 467–473. https://doi.org/10.7326/M18-0850
   PubMed Web of Science ®Google Scholar
• Tombu, M., & Jolicœur, P. (2003). A central capacity sharing model of dual-task performance. Journal of Experimental Psychology: Human Perception and Performance, 29(1), 3. https://psycnet.apa.org/doi/10.1037/0096-1523.29.1.3
   PubMed Web of Science ®Google Scholar
• *van de Sandt-Koenderman, M., Wiegers, J., & Hardy, P. (2005). A computerized communication aid for people with aphasia. Disability and Rehabilitation, 27, 529–533. https://doi.org/10.1080/09638280400018635
   PubMed Web of Science ®Google Scholar
• van de Sandt-Koenderman, W. M. E. (2011). Aphasia rehabilitation and the role of computer technology: Can we keep up with modern times?. International Journal of Speech-Language Pathology, 13(1), 21–27. https://doi.org/10.3109/17549507.2010.502973
   PubMed Web of Science ®Google Scholar
• Wallace, S. E., Dietz, A., Hux, K., & Weissling, K. (2012). Augmented input: The effect of visuographic supports on the auditory comprehension of people with chronic aphasia. Aphasiology, 26(2),162–176. https://doi.org/10.1080/02687038.2011.628004
   Web of Science ®Google Scholar
• Wallace, S. E., & Hux, K. (2014). Effect of two layouts on high technology AAC navigation and content location by people with aphasia. Disability and Rehabilitation: Assistive Technology, 9(2), 173–182. https://doi.org/10.3109/17483107.2013.799237
   PubMedGoogle Scholar
• *Waller, A., & Newell, A. F. (1997). Towards a narrative‐based augmentative communication system. International Journal of Language & Communication Disorders, 32(S3), 289–306. https://doi.org/10.1080/13682829709177102
   Google Scholar
• Weinrich, M., Boser, K. I., & McCall, D. (1999). Representation of linguistic rules in the brain: Evidence from training an aphasic patient to produce past tense verb morphology. Brain and Language, 70(1), 144–158. https://doi.org/10.1006/brln.1999.2141
   PubMed Web of Science ®Google Scholar
• Weinrich, M., McCall, D., Weber, C., Thomas, K., & Thornburg, L. (1995). Training on an iconic communication system for severe aphasia can improve natural language production. Aphasiology, 9(4), 343–364. https://doi.org/10.1080/02687039508248209
   Web of Science ®Google Scholar
• Wilkinson, K. M., & Jagaroo, V. (2004). Contributions of principles of visual cognitive science to AAC system display design. Augmentative and Alternative Communication, 20(3), 123–136. https://doi.org/10.1080/07434610410001699717
   Google Scholar
• Wilkinson, K. M., Light, J., & Drager, K. (2012). Considerations for the composition of visual scene displays: Potential contributions of information from visual and cognitive sciences. Augmentative and Alternative Communication, 28(3), 137–147. https://doi.org/10.3109/07434618.2012.704522
   PubMed Web of Science ®Google Scholar