introduction: People always want to explain their own behaviors. Among this behaviors that we want to have explanation about it, is delinquent and criminal behaviors. Aims: The aim of current study is standardization of revised version of Gudjonsson Blame Attribution Inventory (GBAI-R). method: For this reason in a cross-sectional research, among Evin prison and Tehran Correction center clients a number of 464 subjects were selected by the use of convenient sampling method. Results: Content validity evaluated by Content Validity Ratio (CVR) and Content Validity Index (CVI) that in the base of these, two item (items of 8 and 26) were eliminated. For evaluation of model fit, we used indexes such as CMIN/DF, Goodness of fit index, Adjusted Goodness of fit index, Root mean square error of approximation, parsimony normed fit index, incremental fit index, Tucker-Lewis index, and comparative fit index. The result of confirmatory factor analysis showed that three-factor model have acceptable fitness with data and factor loading for all items (except item number 23) was average and high. Cronbach’s alpha coefficients showed that GBAI-R have high reliability. Discussion: In sum, the result of current study showed that this inventory is a valid and reliable instrument for assessing attributional style in criminals.