The present study assesses the factor structure, psychometric adequacy, and invariance across sex and age of the Relational Provisions Loneliness Questionnaire (RPLQ). Discriminant validity with an external criterion was also tested. In a sample of Portuguese adolescents, from 7th to 9th grade (N = 817), Confirmatory Factor Analyses (CFA) were…

Research focused on student belonging has sometimes used available measures in a unidimensional way despite evidence of multidimensionality in these scales. This study introduces a new unidimensional measure of school belonging that is psychometrically robust with preliminary evidence of construct validity that we call the Simple School Belonging…

A scale for measuring self-efficacy for teaching mathematics in grades 5 to 10 was developed in this study for teachers in Oman. The participants were 328 mathematics teachers randomly selected from five educational governorates in the Sultanate of Oman. Factorial structure of the scale revealed three subscales: self-efficacy for understanding the…

The purpose of this research is to develop a reliable and valid instrument in order to determine the elementary school students' levels about reflective thinking. A total of 320 students of 6th, 7th and 8th grades from 6 different primary schools participated in the study. It was identified that the instrument was composed of totally 17 items with…

The purposes of this study are twofold. First, to investigate the construct or factorial structure of a set of Reading and Mathematics computerized adaptive tests (CAT), "Measures of Academic Progress" (MAP), given in different states at different grades and academic terms. The second purpose is to investigate the invariance of test…

This research was conducted to examine the reliability and construct validity of Turkish version of physical education activities scale (PEAS) which was developed by Thomason (2008). Participants in this study included 313 secondary and high school students from 7th to 11th grades. To analyse the data, confirmatory factor analysis, post hoc…

The current study presents a newly developed measurement: the TEMO (Teacher and Motivation) scale, which assesses adolescent students' perception of liked and disliked teachers and the resulting impact on their academic motivation. A total of 1,088 students from secondary schools in Germany participated in this study. To explore the underlying…

The Authoritative School Climate Survey was designed to provide schools with a brief assessment of 2 key characteristics of school climate--disciplinary structure and student support--that are hypothesized to influence 2 important school climate outcomes--student engagement and prevalence of teasing and bullying in school. The factor structure of…

The authors describe the development and initial psychometric properties of the Friendship Motivation Scale for Children, a new scale designed to assess four dimensions of self-determination (i.e., intrinsic motivation, identified regulation, external regulation, and amotivation) in preadolescents and early adolescents' desire for friendships. The…