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Type I error rates for PARSCALE'S fit index

机译：PARSCALE拟合指数的I类错误率

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摘要

Type I error rates for PARSCALE's fit statistic were examined. Data were generated to fit the partial credit or graded response model, with test lengths of 10 or 20 items. The ability distribution was simulated to be either normal or uniform. Type I error rates were inflated for the shorter test length and, for the graded-response model, also for the longer test length when the ability distribution was uniform. In conditions in which alpha was inflated, it was particularly high when one or more response categories were used infrequently. Overall, PARSCALE's fit index is not recommended for short tests.
机译：检查了PARSCALE拟合统计量的I类错误率。生成的数据适合部分信用或分级响应模型，测试长度为10或20个项目。能力分布被模拟为正态分布或均匀分布。当能力分布均匀时，对于较短的测试时间和对于分级响应模型，对于较长的测试时间，也会增加I型错误率。在Alpha膨胀的情况下，当不经常使用一个或多个响应类别时，它会特别高。总体而言，不建议在短期测试中使用PARSCALE的拟合指数。

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