Psychometric properties of the 3×2 achievement goals: Factor structure, reliability and validity

The purpose of this study was to investigate the psychometric properties of self-construal scale, including factor structure, reliability and validity, in order to prepare the test for psychologica research. The research is an Applied-descriptive one. The sample consisted of 400 students (148 boys and 252 girls) in high school in mathematical-physical and experimental disciplines selected by multi-stage random sampling and achievement goals scales (Elliot, Murayama & Pekrun, 2011) the test was conducted. The results of this study showed that in the confirmatory factor analysis, the structure of the acceptable scale fitted with the data and the fittest indicators of goodness confirm the model. The reliability of the scale was calculated and validated using Cronbach's alpha coefficients and ordinal Theta in the sample group. In general, the findings of the factor analysis, almost similar to those of the original culture and the validity and reliability coefficients, were close to the results of previous research. Therefore, it can be concluded that this scale has a good validity and reliability in the Iranian students and can be used to measure achievement goals levels.