Amendment of grit-12 and testing of its reliability and validity in military college students / 第二军医大学学报

ABSTRACT

Objective To test the reliability and validity of the Chinese version of Grit-12 in military college students, so as to provide a reliable measurement tool for studying grit levels of college students. Methods The items of original Grit-12 were translated and back-translated to survey 337 participants in primary test, and were verified by SPSS 21.0 to form the official Chinese version of Grit-12. A total of 997 studentswere formally surveyed with the Chinese version of Grit-12, in which 201 students were assessed for exploratory factor analysis and reliability test using SPSS 21.0 software; 796 students were assessed for confirmatory factor analysis using Amos 17.0 software and for validity test by psychologica capital scale (PCQ-24). After 2 weeks, 47 of 796 studentswere retested. Results The Chinese version of Grit-12 included 12 items, and the factor loading of each item was over 0.56. The accumulating explanatory rate of the 12 itemswas 47.54%. Confirmatory factor analysis showed that the Chinese version of Grit-12 had a good construct validity, with χ2/df=2.31, comparative fit index (CFI)=0.97, Tucker-Lewis index (TLI)=0.94, goodness of fit index (GFI)=0.97, incremental fit index (FI)=0.97, root mean square error of approximation (RMSEA)=0.05, and square residual mean root (SRMR)=0.06. The total score of the Chinese version of Grit-12 and the scores of subscales were positively correlated with the total score of psychological capital and subscale scores (all P<0.001). The Cronbach a coefficient of the Grit-12 was 0.83, and the a coefficients of the two subscales were 0.76 and 0.82, respectively. The retest reliability (correlation coefficient) of the Chinese version of Grit-12 was 0.80. Conclusion The Chinese version of Grit-12 has good validity and reliability, suggesting that it can be used for assessing grit levels of military college students.