To verify common biases that may occur from data collected from single sources or self-reported measures, Harman’s one factor test was performed. All the items of the TMS, NAO, ADE, LPE, AST, and LIQ constructs were entered into the exploratory factor analysis. The results showed that no single factor appeared from the analysis and no common factor accounts for the majority of variance in these variables, as the largest factor explains only 33.2 percent of the total variance and hence common method bias does not seem to be a problem in this paper.