On the consistency of individual classitication using short scales
On the consistency of individual classitication using short scales
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DOI：
10.1037/1082-989x.12.1.105
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发表时间：
2007-03-01
影响因子：
7
通讯作者：
Meijer, Rob R.
中科院分区：
文献类型：
--
作者：
Emons, Wilco H. M.;Sijtsma, Klaas;Meijer, Rob R.
最多包含15个项目的简短测试用于临床和健康心理学，医学和精神病学，用于对患者做出决定。由于短期测试有很大的测量误差，作者问他们是否足够可靠，将患者分为治疗组和非治疗组。对于一个给定的确定性水平，正确的分类的比例计算不同的测试长度，分数，项目评分，和项目参数的选择。短测试被发现分类最多50%的一组一致。包含20或40个项目的测试结果要好得多。二分和多分（5个有序分数）项目之间的差异很小。建议将高风险决策的短期测试与其他信息结合使用，以提高可靠性和分类一致性。
Short tests containing at most 15 items are used in clinical and health psychology, medicine, and psychiatry for making decisions about patients. Because short tests have large measurement error, the authors ask whether they are reliable enough for classifying patients into a treatment and a nontreatment group. For a given certainty level, proportions of correct classifications were computed for varying test length, cut-scores, item scoring, and choices of item parameters. Short tests were found to classify at most 50% of a group consistently. Results were much better for tests containing 20 or 40 items. Small differences were found between dichotomous and polytomous (5 ordered scores) items. It is recommended that short tests for high-stakes decision making be used in combination with other information so as to increase reliability and classification consistency.