Validation of the Japanese version of Main Concept Analysis (J-MCA)

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Event Abstract Back to Event Validation of the Japanese version of Main Concept Analysis (J-MCA) Hitomi Yazu1, Mariko Yoshino2 and Anthony Pak Hin Kong3* 1 Nippon Medical School Hospital, Japan 2 University of Tsukuba, Japan 3 University of Central Florida, United States Introduction. Yazu, Yoshino, and Kong (2018) recently put forth a preliminary translation of the Main Concept Analysis into Japanese (i.e., J-MCA). Similar to the original version of the Main Concept Analysis (MCA; Kong, 2009, 2016), J-MCA was developed to be a proposition-based analytic system to evaluate the presence, accuracy, completeness, and efficiency of oral discourse output from speakers with aphasia. It utilized a sequential picture description task to elicit four sets of discourse samples, which were subsequently quantified by six measures: (1) Number of Accurate and Complete concepts, (2) Number of Accurate but Incomplete concepts, (3) Number of Inaccurate concepts, (4) Number of Absent concepts, (5) Total Main Concept Score, and (6) Number of Accurate and Complete concepts per minute The aim of this presentation is to report a full validation of the J-MCA. Scoring criteria specific to the language characteristics of Japanese will be highlighted. In addition, the clinical implications of how the J-MCA would improve current management of acquired language problems in Japan will be discussed. Methods. Ten speech-language-hearing therapists, 60 healthy and non-language-impaired participants (HP) without a history of developmental and acquired language disturbance, and 20 people with aphasia (PWA) were recruited. All participants were native speakers of Japanese. The 60 HP were equally divided into three age groups, two education levels, and two genders. As for the PWA group, each of them was confirmed to have aphasia, secondary to a single left-cerebrovascular accident, with an onset time of at least six months prior to the interview. Main results and Discussion. With reference to the performance of our representative group of 60 unimpaired native unimpaired speakers of Japanese, i.e., the normative data, it was found that the J-MCA contained a total of 23 target main concepts. The factor of age was found to affect Total Main Concept Scores, and the factor of education seemed to affect the production of main concepts quantitatively. Concerning the PWA, their J-MCA performance correlated significantly with their severity of aphasia, as reflected by the results of a standardized aphasia battery named Standard Language Test of Aphasia (SLTA; Brain Function Test Committee, Japan Society for Higher Brain Dysfunction, 1999, 2003). Apart from good validity, the J-MCA also demonstrated good-to-excellent inter-rater, intra-rater, and test-retest reliabilities, indicating its sensitivity as well as consistency for evaluation of oral discourse in aphasia. Interestingly, and critically relevant for clinical applications, we identified several important scoring procedures of the J-MCA that were specific to the Japanese language. For example, the use of elliptical sentences in certain main concepts would not be counted as inaccurate when a speaker had included the correct referent in previously-mentioned main concepts. In general, our results suggested that the J-MCA could be an useful resource to supplement the very limited standardized diagnostic tools currently available to clinicians. Extension of the J-MCA project is underway, which includes examining its applicability to other clinical populations, such as those with right-sided cerebrovascular accident and dementia. References Brain Function Test Committee, Japan Society for Higher Brain Dysfunction. (1999). Supplementary Tests for Standard Language Test of Aphasia (SLTA-ST). Japan, Tokyo: Shinkoh Igaku Shuppansha Co., Ltd. Brain Function Test Committee, Japan Society for Higher Brain Dysfunction. (2003). Standard Language Test of Aphasia: A manual of directions. Japan, Tokyo: Shinkoh Igaku Shuppansha Co., Ltd. Kong, A. P. H. (2009). The use of main concept analysis to measure discourse production in Cantonese-speaking person with aphasia: A preliminary report. Journal of Communication Disorders, 42, 442-464. Kong, A. P. H. (2016). The Main Concept Analysis (MCA) for oral discourse production. Hong Kong: The Commercial Press (H.K.) Limited. Yazu, H., Yoshino, M., & Kong, A.P.H. (2018). A Japanese version of Main Concept Analysis: Preliminary report. In B. Rapp (Ed.), Frontiers in Human Neuroscience (pp. 306-307). doi: 10.3389/conf.fnhum.2018.228.00079 Keywords: discourse, Main Concept Analysis, japanese, assessment, Aphasia Conference: Academy of Aphasia 57th Annual Meeting, Macau, Macao, SAR China, 27 Oct - 29 Oct, 2019. Presentation Type: Poster presentation Topic: Eligible for student award Citation: Yazu H, Yoshino M and Kong A (2019). Validation of the Japanese version of Main Concept Analysis (J-MCA). Front. Hum. Neurosci. Conference Abstract: Academy of Aphasia 57th Annual Meeting. doi: 10.3389/conf.fnhum.2019.01.00031 Copyright: The abstracts in this collection have not been subject to any Frontiers peer review or checks, and are not endorsed by Frontiers. They are made available through the Frontiers publishing platform as a service to conference organizers and presenters. The copyright in the individual abstracts is owned by the author of each abstract or his/her employer unless otherwise stated. Each abstract, as well as the collection of abstracts, are published under a Creative Commons CC-BY 4.0 (attribution) licence (https://creativecommons.org/licenses/by/4.0/) and may thus be reproduced, translated, adapted and be the subject of derivative works provided the authors and Frontiers are attributed. For Frontiers’ terms and conditions please see https://www.frontiersin.org/legal/terms-and-conditions. Received: 04 May 2019; Published Online: 09 Oct 2019. * Correspondence: Mx. Anthony Pak Hin Kong, University of Central Florida, Orlando, United States, akong@hku.hk Login Required This action requires you to be registered with Frontiers and logged in. To register or login click here. 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