The concept of Grit has gained momentum in the last several years as a better predictor of achievement than traditional measures, such as IQ. Duckworth, et al. (2007) found grit to be positively correlated to the Big Five personality dimension of conscientiousness, but not to IQ, causing the authors to hypothesize that grit is a good noncognitive supplemental predictor of academic success. The current study is a continuing interdisciplinary investigation of the relationship between college students' perceptions of the link between personal effort and academic performance, and the influence of trait measures such as grit and the Big Five personality dimensions on students' perceptions of the link between personal effort and academic performance (Mannahan & Gray, 2015). Results indicated a significant positive correlation between grit and motivation and a significant positive correlation between conscientiousness and motivation, but conscientiousness did not relate to any other items on the Effort and Performance Inventory. Similar to the findings of Duckworth, et al. (2007), grit was correlated with conscientiousness, but conversely, grit was not related to most of our measures of perceptions of personal effort and academic performance.