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Bethany Shifflett 《Research quarterly for exercise and sport》2013,84(3):266-274
Abstract Through computer simulation of data this study explored the effectiveness of various estimators of reliability in the context of trials-to-criterion testing. The estimation procedures employed were coefficient alpha, parallel forms, and an estimator, called UEV (unbiased error variance), based on estimates of error variance. Based on the results of the computer simulation, the UEV estimator was recommended as the procedure to employ when a single administration of a trials-to-criterion test is planned. However, if a second test administration is feasible the parallel forms estimator was recommended for estimating the reliability of a trials-to-criterion test. 相似文献
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Abstract The reliabilities of two types of measurement plans were compared across six hypothetical distributions of true scores or abilities. The measurement plans consisted of a fixed-length plan (FL), where the number of trials for all examinees is fixed in advance, and the trials-to-criterion plan (TTC), where the number of successful trials is fixed, and examinees continue until this criterion is reached. The comparisons revealed that for most hypothetical distributions considered, the FL plan produced higher test reliabilities. In certain cases of negative skewness, however, the TTC plan was superior. Two formulae were presented for the estimation of the reliability of a TTC test. 相似文献
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