this research aimed to study of the effects of classroom goal structures on students’ psychological wellbeing with respect to the mediating role of self-efficacy and basic psychological needs. in this regard, the effects of performance and mastery goal structure as exogenous variables with self-efficacy and basic psychological needs as mediating variables on wellbeing were tested through a hypo...

background: in patients with hepatitis b and c, environmental factors such as smoking and alcohol can cause liver fibrosis progression. but opium effects on liver fibrosis progression are not clear. this study was designed to assess the relationship of opium user and liver fibrosis progression. methods: in this case-control study, sixty patients in hepatitis b group and sixty patients in hepati...

purpose :   the aim of this study was to examine the influence of selected exercises on motor development in elementary school third grade girl students in ahwaz city, iran . methods :   the present study was semi-experimental, performed as field and using experimental and control groups. the statistical population included all third grade girl students of elementary schools of ahvaz city (10,5...