This study aims to test the validity and reliability of the IoJEPD model instrument to improve the competence of elementary school teachers. This study uses content validity. Quantitative methods and professional experts are the considerations used in this research. The stage of proving the validity of this instrument is carried out utilizing a…

This research aims to develop a reliable and valid scale to determine middle school students' self-efficacy about estimation skills. In addition, with the developed scale, the estimation skill self-efficacy of middle school students was examined in terms of various variables. For these purposes, a draft scale of 40 items was developed by reviewing…

The aim of this study is to develop a measurement tool that can determine the attitudes of social studies teachers and classroom teachers towards the use of current events in the social studies course. The scale consists of 23 five-point Likert-type items. The scale form consisting of 40 items prepared by the researchers was administered to a…

This study aimed to develop a useful test to measure university students' spatial abilities validly and reliably. Following a sequential explanatory mixed methods research design, first, qualitative methods were used to develop the trial items for the test; next, the psychometric properties of the test were analyzed through quantitative methods…

Instrument development is an important step towards unlocking the analytical power of teacher attitudes and beliefs towards Computer Science (CS). Teacher dispositions have strong empirical and theoretical ties to teacher motivation, professional choices, and classroom practices. To determine consensus desirable attitudes and beliefs, we analyzed…

K-12 educators' digital literacy skills have been designated as a national and state priority by education and accreditation agencies in Texas, resulting in the need for curriculum alignments to the 2017 ISTE Standards for Educators and implementation of a digital literacy evaluation. The purpose of this validation study was to develop a…

Person misfit and person reliability indices in item response theory (IRT) can play an important role in evaluating the validity of a test or survey instrument at the respondent level. Prior empirical comparisons of these indices have been applied to binary item response data and suggest that the two types of indices return very similar results.…

The purpose of this study is to develop and validate based on construct validity and sampling validity on a self-confidence scale that can measure student self-confidence at the high school level by adapting self-confidence indicators and adjusting indicators according to the character of students in Indonesia with an age range of 16-18 years. A…

Phonemic awareness refers to the ability to reflect on and process the sounds of spoken language and to conduct mental operations on the units that represent them, that is, phonemes. This study intended to examine the descriptive and psychometric properties of the phonemic awareness of schoolers test assessment (PASTA), a new tool that assesses…

Background: Pre-college engineering education reform documents aim to help students develop engineering literacy. Helping students develop sophisticated epistemological views about engineering makes a significant contribution toward developing engineering-literate citizenry. Despite these widely recognized benefits, research on students' and…

The dimensionality and factorial invariance of scores on the Self-Objectification Beliefs and Behaviors Scale (SOBBS) were examined with a sample of 590 transgender and nonbinary participants. Results failed to disconfirm the two-factor model and provided adequate estimates of internal consistency reliability. Strong, strict, and structural…

The study evaluated the psychometrics of a newly developed scale that measures the perceived familial stigma of LGBQ-sexuality. Exploratory, confirmatory, bifactor, and omega reliability analyses were conducted on a set of items and suggest these scores reliably measure the intended construct, with specific factors of homonegativity, discretion,…

The present study sought to examine the psychometric properties of new German, Portuguese, and Spanish versions of the Revised Short Form of the Physical Self-Inventory (PSI-S-"R"), and to contrast these properties against those from the original French version of this instrument. Participants (n = 1802) were 288 French youth, 177 German…

The increasing and diversifying student enrollments in introductory physics courses make reliable, valid, and usable instruments for measuring student skills and gains ever more important. In introductory physics, in addition to teaching facts about mechanics, we also seek to teach our students the skills of "thinking like a physicist,"…

The aim of the study was to describe the validity and reliability of the Turkish version of Juvenile Arthritis Functional Assessment Report (JAFAR) in children/adolescents with Juvenile Idiopathic Arthritis (JIA). Sixty-nine children/adolescents with JIA were included in the study. JAFAR(TR)-Child and Parent forms were applied to the patients with…