The main objective of this thesis was to explore issues related to student achievement motivation in the Swedish TIMSS 2003 (Trend in International Mathematics and Science Study) context. The thesis comprises of five empirical papers and a summary. The expectancy-value theory of achievement motivation was used as the general theoretical framework in all empirical papers, and all papers are conc...

A model linking children's peer acceptance in the classroom to academic performance via academic self-concept and internalizing symptoms was tested in a longitudinal study. A sample of 248 children was followed from 4th to 6th grade, with data collected from different informants in each year of the study to reduce respondent bias. A path analysis supported the model; a lack of peer acceptance i...

For a sample of 305 6th, 7th and 8th grade students, of whom 95% was from economically disadvantaged Hispanic families and for whom English was their second language, evidence was sought regarding the reliability and construct validity of scores on a Spanish version of an academic self-concept measure entitled Dimensions of Self-Concept (DOSC), comprising five subscales bearing the same names a...

The aim of the present research is to verify the impact of a mindfulness programme on the levels academic performance, self-concept and anxiety, of a group of students in Year 1 at secondary school. The statistical analyses carried out on the variables studied showed significant differences in favour of the experimental group with regard to the control group in all the variables analysed. In th...

background: chronic renal disease is a health problem in today’s world. in the end-stages of renal disease patients depend upon alternative therapies including dialysis for their survival. however, dialysis causes several stressors on physical, mental and social performance of patients. the present study aimed to review and compare the self-concept in patients undergoing hemodialysis and perito...

physical self-concept or perception of physical self is one of the main factors and properties of perception of one’s identity, especially of the youth which has recently been the center of attention of experts in different branches of humanities and social sciences. in fact, perception of body can be considered one of the most important factors that inevitably influence many of our social rela...

abstract introduction: eating disorders and body-image disturbances are of the most prevalent and disabling clinical complications that adolescent girls and young women develop. from the causes which effectively contribute to body dissatisfaction and eating pathology, is considered to be internalization of thin-ideal. this study aims to determine the correlations between thin-ideal internalizat...

In sport/exercise contexts, individuals use the performances of others to evaluate their own competence. In big-fish-little-pond effect (BFLPE) in educational settings, academic self-concept is positively predicted by one’s academic achievement but negatively predicted by the average achievement of others in one’s school or class. Participation in programs for academically gifted students leads...