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 "Raven's 2 Progressive Matrices Clinical Edition" (Raven's 2; Raven, Rust, Chan, & Zhou, 2018), published by NCS Pearson, is an individually administered nonverbal assessment of general cognitive ability developed to measure "educative abilities," defined as the ability to think clearly and solve complex problems in…

For assessments that use different forms in different administrations, equating methods are applied to ensure comparability of scores over time. Ideally, a score scale is well maintained throughout the life of a testing program. In reality, instability of a score scale can result from a variety of causes, some are expected while others may be…

This study examined the degree that reliability coefficients for scores on the PTGI generalize across participant and study characteristics. Meta-analytic procedures resulted in observed and predicted mean alpha coefficients ranging from acceptable to excellent and appeared to be largely unrelated to the participant characteristics included in our…

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"…

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…

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…

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…

This study aimed to develop and test MyPL, a questionnaire that measures self-reported physical literacy (PL) among children and adolescents. First, the item pool was developed and adapted, and face validity was tested with cognitive interviewing. Then, factor structures were identified through multidimensional scaling and exploratory factor…

The primary purpose of this study is to validate a student engagement measure for its use in evaluation of a learning assistant (LA) program. A series of psychometric evaluations were made for both the original scale of Higher Education Student Engagement Scale (HESES) and its adapted version designed to be used in gauging the effectiveness of…