Mathematical abstraction skills are fundamental for advanced reasoning and problem-solving, yet assessing these skills in senior high school students poses challenges due to limited validated instruments. This study aims to develop and validate a test instrument for measuring mathematical abstraction skills in Indonesian high school students. The…

The objective of this study was to develop and validate the Psychobiosocial Experience Semantic Differential in Physical Education (PESD-PE) scale, a new holistic measure of discrete emotion-related feelings (i.e., psychobiosocial experiences) as conceived within the individual zones of optimal functioning (IZOF) framework. A preliminary version…

This study aims to develop Nature of Science (NOS) measurement instrument for high school students in the Mathematics and Natural Sciences program using COVID-19 cases that had occurred since the end of 2019. This study also attempts to validate test items with the Rasch model approach. The participants in this study are 194 high school students…

The aim of this study was to adapt the Positive and Negative Affect Scale for Children (PANAS-C) developed by Laurent et al. into Turkish and to examine its validity and reliability on high school adolescents. The data of the study were analyzed with four different study groups. The first study group consisted of 414 high school adolescents, 262…

Developing an assessment tool to identify mathematical misconceptions is important for early intervention and support for at-risk students. This exploratory sequential mixed methods study aimed to develop and validate a questionnaire for self-reflection on mathematical misconceptions among senior high school students using exploratory and…

The present study has aimed to develop and validate a protein concept inventory (PCI) consisting of 25 multiple-choice (MC) questions to assess students' understanding of protein, which is a fundamental concept across different biology disciplines. The development process of the PCI involved a literature review to identify protein-related content,…

The purpose of this study was to assess the validity of School-Level Environment Questionnaire (SLEQ) in the Vietnam context. The study tested the nomological validity of the main measurement model and a competing model. The participants included 29 interviewees and 408 Vietnamese high-school teachers in Ho Chi Minh City. Interview data were used…

Career aspirations of high school students is a significant motivational force for learning engagement. However, validated methods for probing their career aspirations remain unestablished. Study 1 used 1455 high school students to develop a career aspirations questionnaire (CAQ). The CAQ was developed through item generation, pretesting,…

Anger is a topic that requires intervention from teachers, counsellors, psychologists, parents, and all communities. The expressions of anger are subjective and sometimes hard to identify. Thus, anger should be measured more objectively, while the expressions need to be examined closely. The purpose of this study is to provide valid confirmation…

This study aimed to design and validate the Teacher-Reported Reading Engagement Survey (TRRES) to complement self-reported measures and comprehensively assess reading engagement among adolescents. Drawing insights from literature and expert feedback, a new 10-item Likert scale instrument was created, capturing three facets of reading engagement:…

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…

School climate is an essential ingredient of student well-being and academic success. Although it has been studied extensively, only a few well-validated instruments are available for the assessment of school climate. The aim of this study was to assess the factor validity and measurement invariance of the Socio-educational Environment…

Technological mediation has gained relevance in teaching mathematics. Its usefulness and impact depend, to a great extent, on how students approach the learning of the discipline. Two independent instrumental studies were conducted to analyze the psychometric properties of the Spanish version of the Mathematics and Technology Attitudes Scale…

Background/purpose: This study aimed to investigate the differences among the equations used in estimating the reliability coefficient using the half-split method. These equations demonstrate Spearman-Brown's, Rulon's, Guttman's, Mosier's, Flanagan's, and Horst's. Materials/methods: The study instrument was a 43-item scale for evaluating the…

The primary objectives of this study were to translate and assess the psychometric properties of the Principal Instructional Leadership Scale (PILS) within an Iranian population. The translation and cross-cultural adaptation process involved five stages: forward translation, translation synthesis, backward translation, expert committee review, and…