Background: The reciprocal internal/external frame of reference (RI/E) combines two models of academic self-concept formation, namely the reciprocal effects model (REM) and the internal/external frame of reference (I/E) model. The REM assumes reciprocal relations between achievement and academic self-concept. The I/E model assumes contrast effects…

Background: Research has highlighted that personal characteristics such as teachers' attitudes play an important role in the implementation of inclusive education. However, there are only a few studies that have shed empirical evidence on the relationship of attitudes and inclusive teaching approaches, such as differentiated instruction. In this…

Background and aims: This study focuses on individual differences in the math competencies of primary-school children in Germany. It considers whether or not there are Matthew or compensatory effects in math literacy and which factors and background characteristics of primary-school children can affect competence development. Despite the abundant…

Background: The physical education (PE) teacher is a decisive factor for PE development and teaching. Reflecting on and making the best possible use of the PE teachers' personal resources positively influence teacher effectiveness and student achievement. This requires a comprehensive analysis of PE teachers' personal characteristics. Aims:…

Background: Positive school attitudes defined as students' school liking and school attachment are positively related to many desirable outcomes. Student-teacher relations have often been considered to be an important determinant of school attitudes. Aims: Students' perceived teacher acceptance was used as an indicator for student-teacher…

Background: Researchers often report and discuss gender differences. However, recent research has drawn attention to interaction effects between gender and other social categories. Aims: This study analysed the development of disparities in students' reading-related self-concept, intrinsic motivation, and behaviour, as they relate to differences…

Background: Boys earn lower grades in languages than girls. The expectancy-value model by Eccles" et al." (1983, "A series of books in psychology. Achievement and achievement motives. Psychological and sociological approaches," W.H. Freeman, San Francisco, CA, 76) is a comprehensive theoretical model for explaining gender…

Background: Vocational interests play a central role in the vocational decision-making process and are decisive for the later job satisfaction and vocational success. Based on Ackerman's (1996) notion of "trait complexes," specific interest profiles of gifted high-school graduates can be expected. Aims: Vocational interests of gifted and…

Background: Chronotype refers to individuals' preference for morning or evening activities. Its two dimensions (morningness and eveningness) are related to a number of academic outcomes. Aims: The main goal of the study was to investigate the incremental validity of chronotype as a predictor of academic achievement after controlling for a number…