The present paper aims at considering the AIMS' validity and reliability among Iranian sample. In this regard, English and Farsi scripts conformity and Cieslak's (2004) AIMS-Plus context were assessed through translation and back-translation in a pilot study. At the second phase, statistical sample comprising 384 physical education course students (184 male and 200 female) was applied to verify internal stability and construction validity of the scale through exploratory and confirmatory factor analysis. The original AIMS-Plus version revealed lack of proper construction validity and necessity of deleting some items. That is why the scale was revised and the second factor analysis showed more proper construction validity relative to the original version; moreover it extracted a three-factor construction. Also the results revealed that revision of the scale's validity and internal stability (Cronbach's alpha=0.88) are at acceptable level. According to the research findings the new revised version of AIMS with 17 items has more appropriate psychometrical characteristics for measuring athletic identity among Iranian sample population.

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