When grit was first introduced, it gained popularity before basic psychometric questions were fully explored. One critical issue is how distinct grit is from the Big Five personality trait conscientiousness. Most studies have examined correlations between grit and conscientiousness, rather than conducting item-level factor analysis. This study examined the extent to which grit and conscientiousness are empirically distinct, and which predict students’ grades. A diverse sample of adolescents completed measures of grit and conscientiousness. MIRT-based confirmatory factor analyses showed that grit and conscientiousness’ factor structures strongly overlap. Structural equation modeling showed that conscientiousness and the perseverance of effort component of grit predicted students’ grades more strongly than consistency of interest. These findings indicate that grit and conscientiousness are not unique constructs.

当沙粒第一次被引入时，它在基本的心理测验问题被完全探索之前就变得流行起来。一个关键的问题是，与“五大”人格特质的认真程度有何不同。大多数研究都检查了毅力与责任感之间的相关性，而不是进行项目级因素分析。这项研究检查了沙砾和尽职调查在经验上的不同程度，这些程度可以预测学生的成绩。各种各样的青少年完成了沙砾和尽职调查。基于MIRT的验证性因素分析表明，毅力和责任感因素结构强烈重叠。结构方程模型表明，毅力的毅力和毅力对学生成绩的预测远比对兴趣的一致性强。