Grit: The Power of Passion and Perseverance

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## TL;DR

Grit — defined by psychologist Angela Duckworth (2016) as "passion and sustained persistence applied toward long-term achievement" — predicts success better than IQ or talent in multiple domains. In her landmark study, grit predicted West Point cadet retention better than the Whole Candidate Score (a composite of SAT, GPA, and fitness). Grit comprises two sub-factors: consistency of interest and perseverance of effort.

## Core Explanation

Key findings: (1) Grit predicts spelling bee performance (r=0.30, controlling for IQ), (2) Grittier teachers are more effective (retention +35%), (3) Grit increases with age — potentially reflecting selection effects and identity consolidation. Grit vs conscientiousness (Big Five): grit adds "passion for a specific long-term goal" on top of general self-discipline. Critiques (Credé et al. 2017 meta-analysis): grit overlaps almost entirely with conscientiousness (rho=0.84), and perseverance of effort predicts outcomes better than consistency of interest. Duckworth proposes the "Hard Thing Rule" for building grit: everyone does a hard thing requiring deliberate practice, and quitting requires reaching a natural stopping point. Grit Scale (12-item self-report) is freely available for research and education.

## Detailed Analysis

[详细分析、统计数据、历史发展和进一步阅读。待后续补充。]

## Further Reading

- [Source 1 — Grit: The Power of Passion and Perseverance](https://angeladuckworth.com/)

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