The measurement error in principal components extracted from a set of fallible measures is discussed and evaluated. It is shown that as long as one or more measures in a given set of observed variables contains error of measurement, so also does any principal component obtained from the set. The error variance in any principal component is shown…

The correlated trait-correlated method (CTCM) model for the analysis of multitrait-multimethod (MTMM) data is known to suffer convergence and admissibility (C&A) problems. We describe a little known and seldom applied reparameterized version of this model (CTCM-R) based on Rindskopf's reparameterization of the simpler confirmatory factor…

Exploratory factor analysis (EFA) is a data reduction technique used to condense data into smaller sets of summary variables by identifying underlying factors potentially accounting for patterns of collinearity among said variables. Using an illustrative example, the 5 general steps of EFA are described with best practices for decision making…

The metacognitive self-regulation (MSR) scale is among the most widely used measures of metacognition in educational research. However, the psychometric properties and validity of the scale have not been well established. A series of analyses on a college sample were performed to address this issue. In Study 1, a split-sample exploratory (EFA) and…

Objective: The present study was carried out to compare creativity and self-esteem in the university students with employed and household mothers in academic years 2014-2015. Method: This research is a descriptive one which is of comparative-casual type. The statistical population includes all undergraduate students of Azad universities of…

This research examines the effects of nonattending response pattern contamination and select response style patterns on measures of model fit (CFI) and internal reliability (Cronbach's [alpha]). A simulation study examines the effects resulting from percentage of contamination, number of manifest items measured and sample size. Initial results…

The development and deployment of STEM education in every continent and country are different. An instrument to access the current situation of the application, knowledge, as well as attitude towards STEM education, is necessary. This research aimed to design and develop a valid instrument that can be used to assure the quantitative degree of…

The aim of this study is to develop and validate the School's Emotional Climate scale. To this end, 683 teachers working in elementary and middle schools were recruited. An item pool with 39 items was created based on an extensive literature review and expert opinions. The items were reviewed by experts and seven items were dropped out from the…

Since the first release of NAEYC's guidelines, DAP has received a lot of attention from childhood professionals in the United States. Internationally, many countries have also shown a growing interest regarding DAP, yet interest in DAP is new to the Saudi educators. Thus, the purpose of this study was to explore preschool teachers' subjective…

This study provides the development phases and initial psychometric evaluation of the Integrated Care Competency Scale (ICCS) with sample (n = 243). Specifically, quantitative methods with graduate counseling students were used in this study. The ICCS through a three-phase study process was honed to 65 items and broadly assesses graduate…

This article describes the development and validation of an instrument called science identities, expectations of success in science, values of science, and environmental attitudes (SIEVEA). The instrument is a convenient online survey that can be used to measure students' SIEVEA. First, 1764 high school students from 11 school districts in New…

This study aimed to develop mathematics teaching anxiety scale for prospective primary school teachers. It was designed based on survey method and conducted with four sampling group consisting of 956 prospective primary school teachers at Education Faculties in Turkey. First sampling group was consisted of 404 prospective primary school teachers…

While adolescence is a critical stage of development marked by heightened bottom-up emotional reactivity and immature top-down regulatory control, research on emotion regulation has relatively neglected middle childhood to adolescence years. This may be attributed to the limited number and scope of age-appropriate, reliable, and valid measures of…

This study examined Finnish elementary school teachers' (N = 212) attitudes toward the gifted and their education. On a general level, teachers' attitudes toward gifted education were slightly positive. Teachers saw that gifted students have social value and that they need special services. The results of teachers' attitudes toward specific gifted…

This study was designed to develop an assessment tool to measure high school students' personal epistemology (PE) in the physics domain by using validation processes. Based on theoretical foundations of PE, the PPEQ was conceptualised on six hypothetical dimensions: structure of knowledge [SK], justification of knowledge and knowing [JK],…