The Student Subjective Wellbeing Questionnaire (SSWQ) is a 16-item measure of school-specific subjective wellbeing intended for mental health screening applications. We extended past validation work to scrutinize the SSWQ's previously proposed factor structure (i.e., four group factors; one general factor) and score reliability using two random…

Recycling and its applications are growing significantly due to the great potential for solving a range of environmental problems in society. Nevertheless, there are currently very few instruments that can provide valid and reliable data on students' attitudes toward recycling. In this regard, this article focuses on the development and validation…

The purpose of this study was to develop a Meta-Affective Trait Scale (MATS) to measure the meta-affective inclinations related to emotions that students have while they are studying for their classes. First, a pilot study was performed with 380 10th-grade students. Results of the exploratory factor analysis supported a two-factor structure of the…

The present study reported on the modification of the Basic Psychological Needs in Exercise Scale (Vlachopoulos & Michailidou, 2006) to assess students' psychological need fulfillment in elementary school, middle school, and high school compulsory physical education classes. Data were collected from 817 5th and 6th grade students, 862 middle…

Background: Studies exploring the relationship between students' achievement and the quality of the classroom learning environments have shown that there is a strong relationship between these two concepts. Learning environment instruments are constantly being revised and updated, including for use in different cultures, which requires continued…