IJSSH 2016 Vol.6(7): 519-524 ISSN: 2010-3646
DOI: 10.7763/IJSSH.2016.V6.703

Validation of the Mental Retardation Attitude Inventory-Revised (MRAI-R): A Multidimensional Rasch Analysis

Ka-Lam Sam, Chunxiao Li, and Sing-Kai Lo
Abstract—The purpose of this study is to examine the psychometric properties of the Mental Retardation Attitude Inventory-Revised (MRAI-R) via a multidimensional random coefficients multinomial logit model (MRCMLM) under the Rasch analysis. A total of 521 college students (294 males; 227 females), aged 18-25, in the area of south-east China, completed the MRAI-R (Chinese version). The results showed that the partial credit model had a better goodness of fit than the rating scale model. Among all 29 items, two of them exhibited gender differences (item 2 and 8), and two disordered in their step analyses (item 2 and 22). With the identified four subconstructs, the subscale Subtle Derogatory Beliefs (SUDB) had a relatively low reliability (0.496) while compared to the other three subscales (0.664-0.833). The current results revealed the statistical feasibility of MRAI-R through item calibration. Further work on investigating the details of the item nature itself is recommended.

Index Terms—Mental retardation, Chinese college students, MRAI-R, multidimensinal rasch analysis.

K. L. Sam is with the Faculty of Social Sciences, Hong Kong Baptist University, Hong Kong (e-mail: samsam@life.hkbu.edu.hk).
C. X. Li and S. K. Lo are with the Faculty of Liberal Arts and Social Sciences, The Hong Kong Institute of Education, Hong Kong (e-mail: cxli@ied.edu.hk, skl@ied.edu.hk).

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Cite: Ka-Lam Sam, Chunxiao Li, and Sing-Kai Lo, " Validation of the Mental Retardation Attitude Inventory-Revised (MRAI-R): A Multidimensional Rasch Analysis," International Journal of Social Science and Humanity vol. 6, no. 7, pp. 519-524, 2016.

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