The Relationship between Academic Self-confidence and Academic Achievement in Physics Lesson Based on Academic Motivation

This research aimed to study about the relationship between academic self-confidence and academic achievement in physics course based on the intervention of academic motivation among the secondary school students in Isfahan. The research method was of correlational descriptive type. The Statistical population included 57004 secondary school students in Isfahan in academic year 2012-2013. At first، three districts out of six educational districts in Isfahan were selected randomly through multistage cluster sampling method. Then considering the size، stratified random sampling method was applied and sample size was calculated as 381 people. The research tools included the academic motivation questionnaire، researcher-made questionnaire on academic self-confidence as well as the final score of the students in physic. Data were، then analyzed by means of Pearson correlation tests، structural equitation، Spss 19th version، and Lizrerl software. The findings obtained from statistical analysis showed that there was a significant relationship between the academic motivation and the academic self-confidence or the academic achievement Academic motivation rolled as a mediator between the academic self-confidence and academic achievement. Additionally، between the variables of self-confidence and motivation، only was academic self-confidence which predicted the promotion in Physic in a best way.