The importance of intellectual talent to achievement in all professional domains is well established, but less is known about other individual differences that predict success. The authors tested the importance of 1 noncognitive trait: grit. Defined as perseverance and passion for long-term goals, grit accounted for an average of 4% of the variance in success outcomes, including educational attainment among 2 samples of adults (N=1,545 and N=690), grade point average among Ivy League undergraduates (N=138), retention in 2 classes of United States Military Academy, West Point, cadets (N=1,218 and N=1,308), and ranking in the National Spelling Bee (N=175). Grit did not relate positively to IQ but was highly correlated with Big Five Conscientiousness. Grit nonetheless demonstrated incremental predictive validity of success measures over and beyond IQ and conscientiousness. Collectively, these findings suggest that the achievement of difficult goals entails not only talent but also the sustained and focused application of talent over time.

We examined the relative effectiveness of hardiness and grit as predictors of performance and retention among first year cadets at the USMA. Based on past research and theory, we expected that both hardiness and grit would predict unique variance in performance and retention even after controlling for past performance as measured by the Whole Candidate Score. Results of regression analyses revealed that hardiness and grit predicted unique variance in first year retention, but only hardiness predicted first year performance at USMA. These findings suggest that hardiness assessment and training may prove valuable in enhancing performance and retention within military training environments.

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When predicting success, how important are personal attributes other than cognitive ability? To address this question, we capitalized on a full decade of prospective, longitudinal data from n = 11,258 cadets entering training at the US Military Academy at West Point. Prior to training, cognitive ability was negatively correlated with both physical ability and grit. Cognitive ability emerged as the strongest predictor of academic and military grades, but noncognitive attributes were more prognostic of other achievement outcomes, including successful completion of initiation training and 4-y graduation. We conclude that noncognitive aspects of human capital deserve greater attention from both scientists and practitioners interested in predicting real-world success.

To perform effectively in complex mission environments, security personnel and leaders must be flexible and adaptable in responding to rapidly changing conditions. Psychological hardiness marks resilient people who maintain their health and performance despite stressful situations. The present study evaluates psychological hardiness at entry to West Point military academy as a predictor of leader performance and adaptability over time. Predictors also included Scholastic Aptitude Test (SAT) scores, and a composite indicator of leader potential (Whole Candidate Score) taken from admissions records. Using the Pulakos adaptability taxonomy as a guide, adaptability performance items were taken from a survey of graduates given 3 years after graduation. Also, military leadership grades as West Point seniors provided an index of traditional military performance. Hierarchical regression analyses showed that Whole Candidate Scores predict military leader performance at West Point, but not leader adaptability after graduation. However, hardiness predicts leader performance at West Point, and also leader adaptability (self‐ and supervisor ratings) after graduation. SAT scores and the challenge facet of hardiness are negative predictors of leader performance at West Point. Results indicate that while the traditional measures Whole Candidate Score predicts leader performance in the stable, highly regulated environment of West Point, it does not predict leader adaptability and performance in the uncertain environment of real‐world operations. In contrast, psychological hardiness (commitment and control facets) measured as academy freshmen predicts leader adaptability in officers measured 7 years later. Psychological hardiness appears to be a promising factor in promoting the development of adaptability.