Self-belief does make a difference: a reciprocal effects model of the causal ordering of physical self-concept and gymnastics performance.

Evaluation of the Effect of Physical Activity Programs on Self-Esteem and Body Mass Index of Overweight Adolescent Girls, based on Health Belief Model with School-Centered Approach

Background: Obesity in adolescents leads to physical and mental complications. Exercise is one of the main components of weight control programs. This study aimed to evaluate the effect of physical activity programs on self-esteem and Body Mass Index of overweight adolescent girls. Materials and Methods: This study was a semi experimental study.The subjects were 140 second grade student girls f...

A Reciprocal Effects Model of the Causal Ordering of Academic Self-Concept and Achievement

Presenting a Causal Model of School Emotion and Academic Motivation with Career Guidance: the Mediator Role of Academic Self-Concept

The aim of this study was to present a causal model to investigate the relationship between school emotion and academic motivation with career guidance by considering the mediating role of academic self-concept. The research method was a descriptive-correlational structural equation model. The statistical population included all first-grade high school students in Sanandaj, in the academic year...

An Investigation in Mathematical Performance of Students Who Do Grade-skipping.

The main purpose of this study was to compare the performance of grade-skipped students with their peers in mathematical reasoning and applying. In this study, gender and mathematical self-concept were considered as effective variables. This study was a part of a longitudinal study.  The data analysis was performed through repeated measurements and the results showed that in applying math conce...

Big-Fish-Little-Pond Effects on Gymnastics Self-concept: Social Comparison Processes in a Physical Setting

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...