Measurement specialists routinely assume examinee responses to test items are independent of one another. However, previous research has shown that many contemporary tests contain item dependencies and not accounting for these dependencies leads to misleading estimates of item, test, and ability parameters. In this study, methods for detecting…

A study of 12,388 entering medical students investigated the predictive validity of the Medical College Admission Test (MCAT) by comparing prediction errors for grade point average across racial/ethnic and gender groups. Results show no prediction errors for gender, overprediction of performance for racial/ethnic group, particularly Asians and…

Various methods used to assess the content of a test are reviewed, and a new procedure designed to improve on these methods is presented. The two tests considered are a professional licensure examination, the auditing section of the Uniform Certified Public Accountant Examination, and an educational achievement test, a nationally standardized…