This study is to introduce and confirm the validity of the BOSI test, a comprehensivepsychological test. The BOSI test has six sub-factors including cognitive orientation, cognitiveenvironment, leading behavioral orientation, social behavior, task behavior, cognitive activity. Theresults were interpreted by the relationship between the sub-factors. In this study, the technicalstatistics and structural validity of the BOSI test were confirmed. According to the results of thestudy, the BOSI test showed skewness and kurtosis, and the reliability is higher than .80. As aresult of calculating the concept reliability determined, that the concept reliability was secured bysatisfying the standard value of .70 or more. This calculation provided data that, the conceptreliability value of each factor was .89 to .97. As a result, of checking the validity of thesub-factors of the BOSI test, it was found that all six sub-factors were appropriate. The resultsof the overall model were also found to be similar. The possibilities and limitations of the BOSItest as an aggregate test were described.