Traditional estimators of reliability such as coefficients alpha, theta, omega, and rho (maximal reliability) are prone to give radical underestimates of reliability for the tests common when testing educational achievement. These tests are often structured by widely deviating item difficulties. This is a typical pattern where the traditional…

Background: For peer assessment, reliability (i.e., consistency in ratings across peers) and validity (i.e., consistency of peer ratings with instructors or experts) are frequently examined in the research literature to address a central concern of instructors and students. Although the average levels are generally promising, both reliability and…

The aim of this study was to develop an instrument for assessing sixth-grade students' number sense skills in fractions and decimals. This study was conducted on 452 sixth graders (10-11 years old) from the western region of Turkey. The construct validity of the number sense test (NST) was examined via exploratory factor analysis (EFA) and…

Psychologists are emphasizing the importance of predictive conclusions. Machine learning methods, such as supervised neural networks, have been used in psychological studies as they naturally fit prediction tasks. However, we are concerned about whether neural networks fitted with random datasets (i.e., datasets where there is no relationship…

Rett syndrome is a severe neurodevelopmental disorder that affects about 1 in 10,000 females. Clinical trials of disease modifying therapies are on the rise, but there are few psychometrically sound caregiver-reported outcome measures available to assess treatment benefit. We report on a new caregiver-reported outcome measure, the Rett Caregiver…

This study aimed to evaluate the psychometric properties and gather evidence supporting the validity of scores from a traditional Chinese version of the Claremont Purpose Scale (TC-CPS) among Taiwanese adolescents. The TC-CPS, measuring meaningfulness, goal directedness, and beyond-the-self orientation, was administered to 233 high school and 445…

In this study, it was aimed to adapt the DigiFuehr 2.0 Scale developed by Claassen et al. (2023) to Turkish and to conduct validity and reliability studies on three groups of participants consisting of teachers. In the study, exploratory and confirmatory factor analyses were performed in line with translation study, linguistic application, and…

The study took a Rasch measurement theory approach to validating the 10-item Digital Literacy Scale (DLS) using the unidimensional rating scale model (RSM). To that end, the study used the data from a sample of online Turkish university students. The study began the Rasch analysis with all 10 items in the scale and, to improve in the local…

Background: Undergraduate engineering students report increased rates of mental health distress. Evidence suggests that these students experience high stress, which can perpetuate mental health challenges. Further, engineering students may engage in help-seeking and self-care activities more rarely than students in other disciplines. We…

Early identification of autism spectrum disorder through cost-effective screening is crucial in low- and middle-income countries. The Child Behavior Checklist 1.5-5, using the Autism Spectrum Problems and Withdrawn Syndrome subscales, has potential as a level 1 autism spectrum disorder screening tool, though its construct validity in low- and…

Arts design has been proven to enable designers to have a meaningful learning of STEAM, but research on a checklist for assessing Arts design based on evaluating entries in a STEAM contest is still rare. Therefore, this study developed a checklist for assessing Arts design for evaluating miniature robots in a STEAM contest. Using an example of…

This research paper investigated the importance of conducting measurement invariance analysis in developing measurement tools for assessing differences between and among study variables. Most of the studies, which tended to develop an inventory to assess the existence of an attitude, behavior, belief, IQ, or an intuition in a person's…

Online learning has been conducted in recent years, especially during crises. There have been some studies to increase its effectiveness. Acceptance of online learning is important and affects learners' comfort and their future use. The purpose of this study was to adopt the acceptance of online learning scale into Turkish culture which was…

Objective: To evaluate the psychometric properties of the short version of the Spanish Student Adaptation to College Questionnaire (SACQ-50, Spanish version). Participants: 1513 students from 14 universities in Peru, mainly females (61.5%), aged between 18 and 30 years. Method: Cross-sectional study with the questionnaire administered in person.…

The primary aim of the study is to develop an augmented reality (AR) acceptance scale within the framework of the unified theory of acceptance and use of technology (UTAUT) model to measure individuals' acceptance and use of AR technology. The study was performed with a total of 546 university students with three participant groups in the…