Educational and Psychological Measurement, Ahead of Print. Coefficient omega indices are model-based composite reliability estimates that have become increasingly popular. A coefficient omega index estimates how reliably an observed composite score mea…
Educational and Psychological Measurement, Ahead of Print. Extreme response style (ERS), the tendency of participants to select extreme item categories regardless of the item content, has frequently been found to decrease the validity of Likert-type qu…
Educational and Psychological Measurement, Ahead of Print. The multidimensional mixture data structure exists in many test (or inventory) conditions. Heterogeneity also relatively exists in populations. Still, some researchers are interested in decidin…
Educational and Psychological Measurement, Ahead of Print. The import or force of the result of a statistical test has long been portrayed as consistent with deductive reasoning. The simplest form of deductive argument has a first premise with conditio…
Educational and Psychological Measurement, Ahead of Print. This simulation study investigated to what extent departures from construct similarity as well as differences in the difficulty and targeting of scales impact the score transformation when scal…
Educational and Psychological Measurement, Ahead of Print. Words read correctly per minute (WCPM) is the reporting score metric in oral reading fluency (ORF) assessments, which is popularly utilized as part of curriculum-based measurements to screen at…
Educational and Psychological Measurement, Ahead of Print. The purpose of this study is to introduce a functional approach for modeling unfolding response data. Functional data analysis (FDA) has been used for examining cumulative item response data, b…
Educational and Psychological Measurement, Ahead of Print. When constructing measurement scales, regular and reversed items are often used (e.g., “I am satisfied with my job”/“I am not satisfied with my job”). Some methodologists recommend excluding re…
Educational and Psychological Measurement, Ahead of Print. In modeling missing data, the missing data latent variable of the confirmatory factor model accounts for systematic variation associated with missing data so that replacement of what is missing…
Educational and Psychological Measurement, Ahead of Print. Random item effects item response theory (IRT) models, which treat both person and item effects as random, have received much attention for more than a decade. The random item effects approach …