The goal of this study was to examine the factorial structure, internal consistency, test-retest reliability, criterion validity, convergent validity, and discriminant validity of the Brief Strengths Scale-12 (BSS-12) in Korean population. The Korean sample comprised 288 college students (68.1% were female), ranging in age 19 to 30 years (mean age…

The Career Adapt-Abilities Scale (CAAS) has been validated in several East Asian countries, but the measurement equivalence of its four dimensions and construct validity has not yet been evaluated in Japan. Results from Japanese (n = 298) and South Korean (n = 301) college students indicated good to excellent internal consistency estimates, and…

Concerns have recently been raised about the validity of scales used in the L2 motivational self system tradition, particularly in relation to sufficient discriminant validity among some of its scales. These concerns highlight the need to systematically examine the validity of scales used in this tradition. In this study, we therefore compiled a…

This study aimed to translate the Japanese version of the Life Skills Scale for Adolescents and Adults (LSSAA) into Chinese, English, and Korean, simplify it, and assess its reliability and validity. Validation was performed using individual data of 9941 high-school students from China, Japan, Korea, and the United States collected by the 2021…

This study develops and validates an English communicative competence model for Korean high school students, in response to the need to redefine the relevant concepts and components of competence that are demanded by the rapidly evolving future society. Drawing on Celce-Murcia's (2008) theoretical model on communicative competence, this research…

Background: Teachers' professional commitment is essential for providing high-quality early care and education (ECE) to young children. Previous studies suggest that teachers' perceptions of low levels of personal stress and a satisfactory work environment are both likely to be associated with their greater commitment to work. Objective: The…

In this study, different factor analysis models were employed to test the Self-Compassion Scale (SCS) in 11 distinct populations (n = 15,266) in different countries. The results strongly suggest that the most appropriate use of the SCS is to measure levels of Self-Compassionate responding (positive items) and Self-Uncompassionate responding…

Differentiated instruction is considered to be an important teaching quality domain to address the needs of individual students in daily classroom practices. However, little is known about whether differentiated instruction is empirically distinguishable from other teaching quality domains in different national contexts. Additionally, little is…

The Teachers' Occupational Work Ethic Scale (TOWES) was developed for assessing teachers' work ethic in Korea. Based on an extensive literature review of work ethic instruments and focus group interviews of 15 principals from elementary, middle, and high schools, 77 initial items were developed. Content and face validity of the items were examined…

While research to date on school leadership has identified instructional leadership as an effective means to improve academic achievement, little is known about how teachers and principals view instructional leadership both individually and collectively. We analyzed the OECD Teaching and Learning International Survey (TALIS) of 2008 of 59,152…

For decades, achievement goal theory has been extensively used, but empirical research still requires a clearer understanding of the underlying factors conceptualized and measured during secondary school periods. In light of the increasing use of longitudinal studies in motivation research, this study aims to investigate the longitudinal…

"Grit" is defined as passion and perseverance for achieving long-term goals and consists of two proposed subcomponents: consistency of interests and perseverance of effort. It has become a much-discussed construct even though research on its underlying factor structure has produced inconclusive results. Furthermore, grit as measured by…

In this study, we examined the factor structure and reliability of the Korean Quality of Life (KQoL) survey and compared the KQoL survey to both the World Health Organization Quality of Life-Brief Version (WHOQOL-BREF) and the Satisfaction with Life Scale (SWLS). We also assessed associations between KQoL scores and physical activity (PA)…

The 12-item General Health Questionnaire (GHQ-12) is designed to detect a diagnosable psychiatric disorder and has demonstrated positive psychometric properties in adult populations. Despite these findings, the psychometric properties of the GHQ-12 have hardly been examined with regard to early childhood teachers. This study purposed to examine…

The national social, emotional, and behavioral (SEB) screening in South Korean schools focuses on identifying and intervening with students at risk for SEB concerns, with little attention paid to students' SEB strength. This study aimed to examine (a) the technical adequacy of the Social Emotional Health Survey--Primary (SEHS-P), Youth…