For the international Trends in International Mathematics and Science Study (TIMSS2007) math and science motivation scales (self-concept, positive affect, and value), we evaluated the psychometric properties (factor structure, method effects, gender differences, and convergent and discriminant validity) in 4 Arab-speaking countries (Saudi Arabia, Jordan, Oman, and Egypt) and 4 English-speaking Anglo-Saxon countries (United States, England, Australia, and Scotland). In this article, we also highlight methodological weaknesses in the TIMSS approach to these motivation measures. We found reasonable support for within-group invariance across the math and science domains and between-group invariance across countries for full factor loading invariance and partial item intercept invariance. However, the factor structure is complicated by strong negative-item method effects and correlated unique characteristics associated with the use of math and science items with parallel wording. Correlations involving the motivation factors were reasonably similar across countries, supporting both discriminant and convergent validity in relation to achievement, plans to take more coursework in math and science, and long-term educational aspirations. However, gender differences largely favor girls in the Arab countries (with strong single-sex education systems) relative to Anglo countries (and international norms). The juxtapositions of latent mean differences in achievement and motivation factors are perplexing; students from Anglo countries had substantially higher achievement than students from Arab countries but had substantially lower motivation across all 8 math and science factors.

Extensive support for the seemingly paradoxical negative effects of school-and class-average achievement on academic self-concept (ASC)-the big-fish-little-pond effect (BFLPE)-is based largely on secondary stu dents in Western countries or on cross-cultural Program for International Student Assessment studies. There is little research testing the generalizability of this frame of reference effect based on social comparison theory to primary school students and or to matched samples of primary and secondary students from different countries. Using multigroup-multilevel latent variable models, we found support for developmental and cross-cultural generalizability of the BFLPE based on Trends in International Mathematics and Science Study data; positive effects of individual student achievement and the negative effects of class-average achievement on ASC were significant for each of the 26 groups (nationally representative samples of 4th-and 8th-grade students from 13 diverse countries; 117,321 students from 6,499 classes).Keywords: big-fish-little-pond effect, Trends in International Mathematics and Science Study, frame of reference effects, contextual effects, doubly-latent multilevel models Supplemental materials: http://dx.doi.org/10.1037/a0037485.supp Self-concept, dating back to at least the seminal work by William James (1890/1963), is one of the oldest and most important constructs in the social sciences. Today positive self-beliefs are also at the heart of a positive revolution sweeping psychology, which emphasizes focusing on how healthy, normal, and exceptional individuals can get

Background In the past infectious diseases affected the quality of lifestyle during home confinement. The study conducted examines the influence of home confinement during the COVID-19 pandemic outbreak on lifestyle, mental wellbeing, nutritional status, and sleeping pattern. Method An online multicategorical questionnaire was distributed to collect demographic information combined with the following tools: Food Frequency Questionnaire (FFQ), International Physical Activity Questionnaire (IPAQ), WHO-5 wellbeing score, and Pittsburgh Sleep Quality Index (PSQI). A snowball non-discriminate sampling procedure was conducted to collect data from people attending or working at higher institutions from March 1, 2020 to April 24, 2020. A total of 1723 completed responses (917 males, 37.4 ±13.4 years old and 806 females 32.2 ± 11.5 years old) were collected. Results The female participants had significantly lower mental health scores than males (53.9% vs. 46.1%). The mental wellbeing scores were higher among participants with medium and high physical activity (PA) levels (p < 0.00). Additionally, the mental wellbeing scores were significantly improved by dietary quality and it’s sleeping score (p < 0.001). However, PA was by far the major determinant of the mental health scores. Conclusion Factors such as PA, diet, and sleeping patterns were associated with mental wellbeing during the COVID-19 confinement among Arab participants.

The internal/external frame of reference (I/E) model and dimensional comparison theory posit paradoxical relations between achievement (ACH) and self-concept (SC) in mathematics (M) and verbal (V) domains; ACH in each domain positively affects SC in the matching domain (e.g., MACH to MSC) but negatively in the nonmatching domain (e.g., MACH to VSC). This substantive-methodological synergy based on latent variable models of Trends in International Mathematics and Science Study (TIMSS) data supports the generalizability of these predictions in relation to: mathematics and science domains, intrinsic motivation as well as self-concept, and age and nationality, based on nationally representative matched samples of fourth- and eighth-grade students from three Middle Eastern Islamic, five Western, and four Asian countries (N=117,321 students) with important theoretical, developmental, cross-cultural, and methodological implications.

In this study we examined the structure of self-concept (SC) and the internal/external (I/E) frame of reference model for elementary (n = 276) and junior high (n = 293) students in the United Arab Emirates. The results provided support for the multifaceted interpretation for both groups of students. However, the study provided stronger support for the hierarchical structure with junior high than with elementary students' data. Higher-order confirmatory factor analysis (HCFA) of each group revealed that the second-order factor model was the best fitting model. The pattern of correlations indicated that SC in various areas becomes more differentiated with age. Self-concept dimensions were more distinct for junior high students than for elementary students. SDQ-I subscales were more reliable with junior high students (range: .72-.94) than with elementary students (range: .74-.90). We found partial support for the propositions of the I/E frame of reference model for both groups of students.The self-concept (SC) structure and its relationships to other constructs have attracted much attention in the past two decades. This attention centered ____________