Grit, as defined by psychologist Angela Duckworth, is perseverance and passion for long-term goals. It’s not about talent, intensity in the moment, or how hard you can push for a week. It’s about sustaining both effort and interest over months and years, even when progress is slow, boring, or frustrating. Duckworth’s research across military cadets, Ivy League students, and spelling bee competitors consistently shows that this combination of stamina and direction predicts success in ways that talent alone does not.
The Two Components of Grit
Duckworth breaks grit into two distinct dimensions that work together. The first is perseverance of effort: the ability to keep working hard despite failure, setbacks, or plateaus. The second is consistency of interest: maintaining focus on the same high-level goals over time rather than jumping from one passion to the next. Both matter, but they capture different things. You can be a hard worker who constantly switches directions, or you can be deeply focused but give up easily when things get difficult. Grit requires both staying power and staying course.
Research published in Frontiers in Psychology describes how these dimensions contribute to success in complementary ways. Perseverance of effort helps people push through failure to achieve mastery. Consistency of interest keeps people engaged in the kind of sustained, deliberate practice that mastery demands. Someone training for years as a pianist, for instance, needs both the discipline to practice scales on days they’d rather not and the enduring interest in music that keeps them at the piano year after year.
How Duckworth Measures Grit
Duckworth developed a 10-item self-report questionnaire called the Grit Scale, freely available on her website. It asks you to rate how much you agree with statements that map onto the two dimensions. Some items measure consistency of interest, like “New ideas and projects sometimes distract me from previous ones” or “I have been obsessed with a certain idea or project for a short time but later lost interest.” Others measure perseverance of effort, like “I have overcome setbacks to conquer an important challenge.”
You respond on a five-point scale from “very much like me” to “not like me at all,” and the result is a score from 1 to 5. The score reflects how passionate and persevering you see yourself to be relative to most people. It’s a simple tool, but it has proven surprisingly predictive in high-stakes settings.
What Grit Predicts (and Where It Was Tested)
Duckworth’s original 2007 study tested grit across six very different groups totaling thousands of participants, and the pattern held in all of them. Among two large samples of adults (over 2,200 people combined), grittier individuals achieved higher levels of education. Among Ivy League undergraduates, grit predicted GPA. Among National Spelling Bee competitors, grit predicted final rankings. And the most striking results came from West Point.
The United States Military Academy’s first summer of training, known as “Beast Barracks,” is an intense physical and emotional gauntlet designed to push new cadets to their limits. Many drop out. Duckworth found that cadets who scored one standard deviation higher on the Grit Scale had 62% higher odds of staying at West Point long-term. Grit outperformed SAT scores, high school class rank, and self-control as a predictor of who would stick it out.
The Spelling Bee research added another layer. Grittier spellers didn’t just practice more. They practiced differently, spending more time on deliberate practice (studying and memorizing words alone) rather than less demanding activities like being quizzed by others or reading for pleasure. Grit, in other words, didn’t just keep kids at the table longer. It kept them doing the harder, less fun work that actually improved performance.
Grit vs. Intelligence
One of Duckworth’s most notable findings is that grit is not correlated with IQ. Smart people are not grittier, and gritty people are not necessarily smarter. The two traits operate independently. In samples of high-achieving students, grit actually outperformed IQ as a predictor of academic achievement. This doesn’t mean intelligence is irrelevant. Research from rural China found that both IQ and grit predict academic gains for the average student, and grit did not translate into achievement gains for students with significant cognitive delays. But among people with adequate ability, how far they go depends heavily on whether they sustain effort and focus over time.
The Role of Growth Mindset
Duckworth has proposed that growth mindset, the belief that abilities can be developed through effort rather than being fixed at birth, may be a precursor to grit. The logic is intuitive: if you believe your hard work will actually pay off, you’re more likely to set ambitious long-term goals and keep pushing toward them. A study tracking adolescents over time, published in the Journal of Experimental Child Psychology, found that the relationship runs both directions. Teens who believed intelligence was malleable became grittier over time. And to an even greater degree, grittier teens developed stronger growth mindsets. The two traits appear to be distinct but mutually reinforcing, creating an upward spiral where belief fuels effort and sustained effort strengthens belief.
What Grit Is Not
Duckworth draws a clear line between grit and simply being a hard worker. Grit is not about grinding through tasks you don’t care about. It’s about having what some researchers call an “ultimate concern,” a goal you care about so much that it organizes and gives meaning to almost everything you do. The passion component is not about intensity or infatuation. It’s about consistency: waking up day after day still committed to the same overarching direction.
She also distinguishes grit from stubbornness. Gritty people still adjust their strategies and abandon lower-level goals that aren’t working. What they don’t abandon is the top-level goal. A gritty medical student might switch study methods, change specialties, or retake an exam, but they don’t walk away from medicine.
The Biggest Criticism of Grit
The most persistent scientific critique is that grit may not be meaningfully different from conscientiousness, a well-established personality trait in the Big Five model that captures self-discipline, organization, and dependability. A study published in Personality and Individual Differences found that grit and its two facets loaded strongly onto a conscientiousness factor. After removing the overlap with conscientiousness and controlling for SAT scores, neither grit nor its facets predicted college GPA on their own. The perseverance of effort facet overlapped especially heavily with conscientiousness, while consistency of interest was more distinct but also less predictive.
This doesn’t mean the concept is useless, but it does raise the question of whether Duckworth identified something genuinely new or repackaged a known trait with a more compelling narrative. The practical distinction may matter less than the academic one. Whether you call it grit or conscientiousness directed at long-term goals, the underlying pattern is the same: people who sustain focused effort over years tend to outperform those who don’t, often by more than raw ability would predict.