Grit: The power of passion and perseverance

by Angela Duckworth

Moderate

Angela Duckworth, psychologist at the University of Pennsylvania, presents the research that launched a global conversation about what predicts long-term success. After leaving a high-paying job in consulting to teach seventh-grade math, Duckworth noticed that IQ was not what separated her highest-performing students from those who struggled — it was a combination of passion and long-term perseverance she would go on to call “grit.”

Key Arguments

Talent is not the answer. Duckworth’s research across West Point cadets, National Spelling Bee competitors, rookie teachers, and salespeople consistently finds that grit — not IQ, talent, or looks — is the best predictor of who stays in and succeeds.
Grit is passion plus perseverance over years. Having a top-level goal that remains stable over time, combined with daily effort and resilience in the face of failure, characterizes the grittiest performers. Grit is not about grinding through tasks you hate; it requires genuine passion for a long-term aim.
Grit is largely independent of talent. Duckworth’s data shows that grit and raw talent are unrelated or slightly negatively correlated — meaning highly talented people are sometimes less gritty, perhaps because early success has shielded them from failure.
Growth mindset is a foundation for grit. The best-supported way to build grit is to cultivate a growth mindset — the belief that abilities can develop through effort and learning from failure.

Evidence Context

Duckworth’s grit research has been influential but also challenged. The strongest critiques are that the Grit Scale largely measures conscientiousness (already in the Big Five personality model) and that effect sizes in general population samples are smaller than her high-stakes domain studies suggest. Nonetheless, the core message — that consistent passion and effort over time matters enormously for achievement — is well-supported by longitudinal research on expertise and life outcomes.

Evidence: moderate

Duckworth's grit construct has predictive validity in specific high-stakes, long-horizon domains (West Point attrition, spelling bee competitions, teacher retention). Meta-analyses find that grit adds modest predictive power beyond conscientiousness, a well-established Big Five trait, raising questions about whether grit is genuinely novel. The core insight — that passion plus perseverance predicts long-term achievement — is robust; the claim that IQ and talent matter less than grit is contested.