ABSTRACT Individual person fit analyses provide important information regarding the validity of test score inferences for an individual test taker. In this study, we use data from an undergraduate statistics test (N = 1135) to illustrate a two-step method that researchers and practitioners can use to examine individual person fit. First, person fit is examined numerically with several indices based on the Rasch model (i.e., Infit, Outfit, and Between-Subset statistics). Second, person misfit is presented graphically with person response functions, and these person response functions are interpreted using a heuristic. Individual person fit analysis holds promise for improving score interpretation in that it may detect potential threats to validity of score inferences for some test takers. Individual person fit analysis may also highlight particular subsets of items (on which a test taker performs unexpectedly) that can be used to further contextualize her or his test performance.

中文翻译：

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使用人员响应功能来调查与项目特征相关的人员失职区域

摘要个体适合度分析为单个应试者提供了有关测验分数推论有效性的重要信息。在这项研究中，我们使用来自本科生统计学测试（N = 1135）的数据来说明研究人员和从业人员可以用来检查个人健康状况的两步法。首先，基于Rasch模型使用几个指数对人的适合度进行数字检查（即，适合度，服装和子集间统计）。其次，通过人员响应功能以图形方式显示人员失配，并使用启发式方法解释这些人员响应功能。个人适合度分析有望改善分数解释，因为它可以检测到某些应试者对分数推断有效性的潜在威胁。