The reliability of a test score is usually underestimated and the deflation may be profound, 0.40 - 0.60 units of reliability or 46 - 71%. Eight root sources of the deflation are discussed and quantified by a simulation with 1,440 real-world datasets: (1) errors in the measurement modelling, (2) inefficiency in the estimator of reliability within…

The purpose of this study is to identify which scale short-form development method produces better findings in different factor structures. A simulation study was designed based on this purpose. Three different factor structures and three simulation conditions were selected. As the findings of this simulation study, the model-data fit and…

The validity of the Kappa coefficient of chance-corrected agreement has been questioned when the prevalence of specific rating scale categories is low and agreement between raters is high. The researchers proposed the Lambda Coefficient of Rater-Mediated Agreement as an alternative to Kappa to address these concerns. Lambda corrects for chance…

This study tested the psychometric properties of the "Sense of Belonging in STEM" Scale (SOB-STEM), a new scale measuring students' subjective evaluation of their academic and social experiences in STEM learning contexts, primarily focusing on purposeful interpersonal interactions. Data from 758 college students were analyzed, yielding…

To date, no measure of perceptions reflecting the view of childhood as a social construction exists within the fields of developmental psychology or education. The aim of this small-scale study was to develop items to assess beliefs about children along a spectrum -- at one end of the spectrum conceptualizing children as human "beings"…

This paper presents a unified Arabic version of the English action verbs mentioned in Bloom's taxonomy (1956) that has been checked for validity and reliability by a panel of education experts. Methodologically, the Bloom's list of action verbs was first translated into Arabic by an expert professor of translation. Then, using a mixed-method…

Civil engineering students in the United States rarely receive instruction about how their work affects social inequities. Indeed, research reveals that most engineering students lack critical consciousness and fail to recognize and analyze real social inequity challenges as they arise in engineering contexts. As history demonstrates, this can…

International large-scale assessments have gained much attention since the beginning of the twenty-first century, influencing education legislation in many countries. This includes Spain, where they have been used by successive governments to justify education policy change. Unfortunately, there was a problem with the PISA 2018 reading scores for…

Objective: The purpose of this study was to describe the relationship between community college department chairs and their adjunct faculty. Methods: This was a descriptive phenomenological qualitative study that used individual semi-structured interviews of 14 department chairs from a purposive sample drawn from a midwestern community college.…

The objective of this study was to understand the psychometric functioning of the Child Anger Regulation Measure (CARM), its prediction of emotional engagement, and if the prediction of emotional engagement differs for girls and boys. The sample included 251 upper-elementary school students in the United States (10% Black, 62% White, 6% Latinx, 5%…

Autistic people's perceptions of their interactions with criminal justice professionals are predominantly negative; however, little is known about the state of interactions on a global scale. To further understanding, a comprehensive stakeholder questionnaire was created. Aspects of reliability and validity including evidence for test content and…

Clearinghouses set standards of scientific quality to vet existing research to determine how "evidence-based" an intervention is. This paper examines 12 educational clearinghouses to describe their effectiveness criteria, to estimate how consistently[underlined] they rate the same program, and to probe why their judgments differ. All the…

The importance of understanding student attitudes has become paramount in the successful deployment of blended learning. This study aimed to examine the factorial structure of a scale designed to assess university students' attitudes towards blended learning. Using a descriptive quantitative research approach, the study included a sample of 889…

This study was designed considering the necessity of a questionnaire (validated on Romanian population and built after consulting the available papers on the subject) for evaluating the resilience of adolescents. It was focused on further developing the ARES ("Adolescents' Resilience Evaluation Scale", built in 2018 as a pilot-study,…

Anaerobic capacity is an important determinant of swimming performance, and a feasible land-based test for measuring swim-specific anaerobic capacity is lacking. This study assessed the test-retest reliability of a swim-specific modification of the Wingate anaerobic capacity test: the WAnT-Swim. Ten competitive and fitness swimmers from the local…