Applying Rasch Analysis to Assessing the Social Distance Scale in Patients with Schizophrenia

羅序模式檢定精神分裂症病人之社會距離量表

蘇雅惠(Ya-Hui Su)；黎士鳴(Shih-Ming Li)；蔡堯安(Yao-An Tsai)

試題反應理論 ； 污名化 ； 精神分裂症 ； 羅序模式 ； item response theory ； stigma, psychoses ； Rasch model

台灣精神醫學

27卷4期（2013 / 12 / 01）

329 - 333+5

英文

目的：社會距離（social distance）是污名化（stigma）研究的重要指標之一，本研究主要目的是採用羅序模式（Rasch analysis）檢定，來探討社會距離量表的題目品質。方法：本研究所採用的社會距離量表共有八題，主要評估社會大眾對於精神分裂症病人的社會距離。共有348大學生完成此量表，並採用古典測驗理論來驗證本量表的信度與效度，同時採用羅序模式來檢定題目的質量。結果：本量表有良好的內部一致性信度與建構效度，並且合乎羅序模式中的單一向度假設。從難度指標來看，題目四（一同用餐）是難度適中的題項。結論：根據接觸理論，人際接觸是一種反污名的介入策略，本研究的發現正好說明未來反污名策略的發展方向。

Objective: The social distance scale is an important index in stigma studies. In this study, a Rasch analysis was used to evaluate the social distance scale in patients with schizophrenia. Method: A questionnaire with eight items was used to measure the social distance in patients with schizophrenia. A total of 348 college students participated this study. Results: Based on the classic testing theory, the social distance scale had good reliability and construct validity. Under the Rasch analysis, we found that most items were fitted to the model's expectations. It showed that these eight items assessed a single and unidimensional construct and that item with moderate social distance was item 4 (having a meal). Conclusion: Based on the contact theory, we suggest that an interpersonal contact related antistigma program can be developed to reduce our social distance to patients with schizophrenia.

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