C-Test is a gap-filling test designed to measure first and second language proficiency. Over the past four decades, researchers have shown the fit of C-Test data to parametric item response theory (IRT) models, but no study so far has shown the fit of C-Tests to nonparametric IRT models. The purpose of this study is to contribute to the ongoing…

Problem Statement: School administrators who are aware of their own emotions and know how to manage them are in high demand nowadays. It is important to improve the emotional labor of school administrators in schools that have quite a high number of interactions. Literature review shows that emotional labor has been studied in several service…

Syntax has a high importance among linguistic parameters, and syntax-related problems are the most common in language disorders. Therefore, the present study aimed to design a Photographic Expressive Persian Grammar Test for Iranian children in the age group of 4-6 years and to determine its validity and reliability. First, the target…

The aim of this study is to determine the perceptions of preschool teachers regarding critical multicultural education competencies. The study is based on "Critical Multicultural Education Competency Model." The sample of this descriptive research consists of 120 teachers employed at 56 kindergartens and 24 independent nursery classes in…

The purpose of this study was to evaluate the construct and predictive validity of scores on a measure of social acceptability of class-wide and individual student intervention, the School Intervention Rating Form (SIRF), with high school teachers. Utilizing scores from 158 teachers, exploratory factor analysis revealed a three-factor (i.e.,…

Learning a language means not only studying four skills of proficiency, but also understanding the system of rules underlying. In this respect, learners' attitudes towards grammar are also of vital importance. The main objective of this descriptive study is to determine English language learners' attitudes towards grammar and to analyze these…

The OECD Program for International Student Assessment (PISA) and the OECD Teaching and Learning International Survey (TALIS) constitute two of the largest ongoing international student and teacher surveys presently underway. Data generated from these surveys offer researchers and policy-makers opportunities to identify particular educational…

Discusses the papers in this special issue, emphasizing the practical applicability of nonparametric item response theory (NIRT) and how NIRT addresses lack-of-fit issues. Also discusses the ability of NIRT to assess latent multidimensionality and the relation of latent multidimensionality analyses to construct validity. (SLD)

It is believed by some that most tests are multidimensional, meaning that they measure more than one underlying construct. The primary objective of this study is to illustrate how variations in the secondary ability distribution affect the statistical detection of dimensionality and to demonstrate the difference between substantive and statistical…

The development of the DETECT procedure marked an important advancement in nonparametric dimensionality analysis. DETECT is the first nonparametric technique to estimate the number of dimensions in a data set, estimate an effect size for multidimensionality, and identify which dimension is predominantly measured by each item. The efficacy of…

The difference between item bias and item impact and the way they relate to item validity are discussed from a multidimensional item response theory perspective. The Mantel-Haenszel procedure and the Simultaneous Item Bias strategy are used in a Monte Carlo study to illustrate detection of item bias. (SLD)