The nonequivalent groups with anchor test (NEAT) equating design are traditionally based on using a single to adjust for differences in difficulty which is critical forms most large-scale testing programs. When tests differ somewhat content and length, methods the item response theory (IRT) model leads greater stability of results. current study compared standard errors, bias, root mean square ...

This paper examined various factors affecting linking accuracy of the augmented tests containing both common assessments and state-specific item sets in the context of the Common Core State Standards (CCSS). Linking was conducted using the common-item nonequivalent groups design with pseudo and simulated data. The factors included group ability differences, differential effect sizes, latent-tra...

OBJECTIVE The lack of distinction in the clinical use of terms like fatigue and sleepiness is an important issue. While both fatigue and sleepiness can potentially be associated with nonrestorative sleep (NRS) complaints, their relationships are still poorly described. We propose to use Rasch analysis-based methods to study the interrelations of fatigue, sleepiness and NRS. METHODS 150 subjec...

There is variability in the estimation of an equating transformation because commonitem parameters are obtained from responses of samples of examinees. The most commonly used standard error of equating quantifies this source of sampling error, which decreases as the sample size of examinees used to derive the transformation increases. In a similar way of reasoning, the common items that are emb...

According to the equating guidelines, a set of common items should be a mini version of the total test in terms of content and statistical representation (Kolen & Brennan, 2004). Differences between vertical scaling and equating would suggest that these guidelines may not apply to vertical scaling in the same way that they apply to equating. This study investigated how well the guideline of con...

Abstract Different organizations register alarming poverty rates in Argentina. However, there may be differences who is considered poor according to these measurements and by society, from common sense knowledge. This work analyzes the social representations of people living a sample 605 Argentines, using free-word association technique. The results suggest that person first understood as someo...

Frequency estimation (also called post-stratification) is an equating method employed under the common-item nonequivalent groups design. A modified frequency estimation method is proposed here, based on altering one of the traditional assumptions in frequency estimation in order to correct for equating bias. A simulation study was carried out to compare equating errors for the modified frequenc...

Andersson, B. 2014. Contributions to Kernel Equating. Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Social Sciences 106. 24 pp. Uppsala: Acta Universitatis Upsaliensis. ISBN 978-91-554-9089-8. The statistical practice of equating is needed when scores on different versions of the same standardized test are to be compared. This thesis constitutes four contributions...