Educators use various statistical techniques to explain relationships between latent and observable variables. One way to model these relationships is to use Bayesian networks as a scoring model. However, adjusting the conditional probability tables (CPT-parameters) to fit a set of observations is still a challenge when using Bayesian networks. A…

Automated scoring systems are typically evaluated by comparing the performance of a single automated rater item-by-item to human raters. This presents a challenge when the performance of multiple raters needs to be compared across multiple items. Rankings could depend on specifics of the ranking procedure; observed differences could be due to…

Although content validity--how well each item of an instrument represents the construct being measured--is foundational in the development of an instrument, statistical validity is also important to the decisions that are made based on the instrument. The primary purpose of this study is to demonstrate how simulation studies can be used to assist…

The purpose of this study was to design an instrument for five- to six-year-old children to help measure their verbal reasoning skills and assess the validity and reliability of the resulting instrument. For this purpose, the researchers have created the Younger Children Verbal Reasoning Test (YCVR-test) and a control instrument, which have been…

Adaptive testing is advantageous in that it provides more efficient ability estimates with fewer items than linear testing does. Item-driven adaptive pretesting may also offer similar advantages, and verification of such a hypothesis about item calibration was the main objective of this study. A suitability index (SI) was introduced to adaptively…

Despite the current importance given to L2 vocabulary acquisition in the last two decades, considerable deficiencies are found in L2 students' vocabulary size. One of the aspects that may influence vocabulary learning is word frequency. However, scholars warn that frequency may lead to wrong conclusions if the way words are distributed is ignored.…

The measurement of higher-order competencies within a tertiary education system across countries presents methodological challenges due to differences in educational systems, socio-economic factors, and perceptions as to which constructs should be assessed (Blömeke, Zlatkin-Troitschanskaia, Kuhn, & Fege, 2013). According to Hart Research…

This article investigates several questions regarding the impact of different item formats on measurement characteristics. Constructed response (CR) items and multiple choice (MC) items obviously differ in their formats and in the resources needed to score them. As such, they have been the subject of considerable discussion regarding the impact of…

Confirmatory multidimensional item response theory (CMIRT) was used to assess the structure of the Graduate Record Examination General Test, about which much information about factorial structure exists, using a sample of 1,001 psychology majors taking the test in 1984 or 1985. Results supported previous findings that, for this population, there…

An attempt was made to evaluate the standard error of equating (at the mean of the scores) in an ongoing testing program. The interest in estimating the empirical standard error of equating is occasioned by some discomfort with the error normally reported for test scores. Data used for this evaluation came from the Admissions Testing Program of…

The SAT® I: Reasoning Test is administered seven times a year. Primarily for security purposes, several different test forms are given at each administration. How is it possible to compare scores obtained from different test forms and from different test administrations? The purpose of this paper is to provide an overview of the statistical…

This collection of 10 selected conference papers report the results of language testing research. Titles and authors are: "Computerized Adaptive Language Testing: A Spanish Placement Exam" (Jerry W. Larson); "Utilizing Rasch Analysis to Detect Cheating on Language Examinations" (Harold S. Madsen); "Scalar Analysis of…