Reliability Estimation For Trials-to-Criterion Testing

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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.