The aim of this study is to examine how the practice of different item removal strategies during exploratory factor analysis (EFA) phase of scale development change the number of factors, factor loadings, explained variance ratio, and reliability values (a and ?) explained. In the study, data obtained from 379 university students were used for the…

It is necessary to supply proof regarding the construct validity of the scales. Especially, when new scales are developed the construct validity is researched by the Exploratory Factor Analysis (EFA). Generally, factor extraction is performed via the Principal Component Analysis (PCA) which is not exactly factor analysis and the Principal Axis…

Purpose: Lifelong learning has become one of the most interesting areas of research. Hence, the current study was aimed at developing and validating a tool that helps to study how well people working in higher education institutions are engaged in lifelong learning. Design/methodology/approach: A review of theories in the literature and experts'…

The aim of this study was to develop and validate a psychometrically-sound instrument to assess students' perceptions about class cohesion. Two studies were conducted. In Study 1, four steps were established: (1) development of the Class Cohesion Questionnaire (CCQ); (2) item selection; (3) item compression; and (4) exploration of psychometric…

The Mindset Assessment Profile is a popular questionnaire purportedly designed to measure mindset--an individual's belief in whether intelligence is malleable or stable. Despite its widespread use, the questionnaire appears to assess an individual's need for cognition and goal orientation more than mindset. We assessed the reliability, construct…

The "metaverse," which bridges augmented and virtual reality as mixed reality and includes technological phenomena such as artificial intelligence, continues to be an agenda topic. It is foreseen that the concept in question will accelerate the changes in education and teaching activities, as in many other fields. In this research, a…

The purpose of this research is to develop a scale to determine teachers' self-efficacy levels regarding differentiated instruction. To create the item pool, the first 61 item draft form was prepared. This draft form was submitted to the opinion of experts from different fields and necessary corrections were made. Before starting the analysis…

The aim of this study is to adapt the Statistics Anxiety Scale (SAS) developed by Vigil-Colet et al. (2008) to Turkish. This study is expected to fill an important gap in the literature since no valid and reliable specific statistics anxiety scale developed or adapted in Turkish for undergraduate students in the literature is available. The sample…

The aim of this study was to develop a scaling instrument for measuring organizational development level in the Turkish higher education context depending on perceptions of the faculty. The sample consisted of academicians of higher education institutions in the 2020-2021 academic year. Data were gathered in two stages. Exploratory Factor Analysis…

This study aims to develop a valid and reliable measuring instrument that can measure the level of mathematical language used by students and their teachers during the teaching of fractions to fourth-grade primary school students. This study is a methodological validity and reliability study. In total, 999 students from fourteen different…

The ongoing debates about the effects of human population growth (HPG) is one of the concepts in education for sustainable development (ESD). Beliefs toward HPG are an important construct for teacher education because beliefs potentially interfere with their instructional practices and students' beliefs, attitudes and behaviors. Accordingly, this…

The aim of the study is to develop an achievement test consisting of the questions in verbal intelligence games whose validity and reliability have been ensured and which are in accordance with the learning outcomes of the states of substance and knowing the properties of substance via the five senses taking place in the unit "Let's Know…

Background: A critical issue in International English Language Testing System (IELTS) lies in the significance of the validity of IELTS listening comprehension test (hereafter IELTS LCM). However IELTS listening validity has been investigated, it has not been investigated with reference to multiple sources of evidence regarding item internal…

The Health Belief Model (HBM) is one of the oldest and most recognized conceptual framework of health behavior and can be applied to disaster preparedness efforts which focus predominantly on human behavior. The study aims to develop and test the psychometric properties of the General Disaster Preparedness Belief (GDPB) scale based on the HBM. A…

The objective of this study was to examine the construct validity and bias of a child health interview (CHI) instrument to assess young children's food and activity preferences. A quantitative study examining the construct validity and bias of a young child health interview instrument using confirmatory factor analysis (CFA) and multi-group CFA…