The major forms of evidence that support a standard's credibility are reviewed, and what can be done over time and for different forms of an examination to enhance its comparability in a credentialing setting is outlined. Pass-fail decisions must be consistent to ensure a standard's credibility. (SLD)

Whether anchor item sets varying in difficulty and discrimination affect precision of cutting score equivalents generated through judge rescaling as much as equivalents from score equating was studied with 4 groups of experts and 250 and 1,000 examinees. Results indicate the robustness of judge rescaling and its superiority over equating. (SLD)

Effects of reviewing items and altering responses on examinee ability estimates, test precision, test information, decision confidence, and pass/fail status were studied for 376 examinees taking 2 certification tests. Test precision is only slightly affected by review, and average information loss can be recovered by addition of one item. (SLD)

Describes an automated scoring algorithm for a computer-based simulation examination of physicians' patient-management skills. Results with 280 medical students show that scores produced using this algorithm are highly correlated to actual clinician ratings. Scores were also effective in discriminating between case performance judged passing or…

A brief history of developments in the assessment of the reliability of credentialing examinations is presented, and some new results are outlined that highlight the interactions among scoring, standard setting, and the reliability and validity of pass-fail decisions. Decision consistency is an important concept in evaluating credentialing…

Number-correct scoring was compared to empirical option weighting for estimating domain scores and making pass/fail decisions that are typical of certification, licensing, competency, and proficiency testing. The usefulness of the option-total correlation option-weighting method was illustrated with a sample of 1,000 high school students. (SLD)