Grit: The Power of Passion and Perseverance · chapter 13 · id grit-c13-06-the-core-thesis-of-the-book---
“The core thesis of the book -- that passion and perseverance for long-term goals is a better predictor of success than talent or IQ alone -- represents a meaningful contribution to understanding human achievement, even if the construct needs refinement.”
needs contextconfidence: medium⚠ extracted by pipeline, re-audit pending
Receipts
Duckworth et al. (2007), JPSPDOI registry: valid
Grit accounted for incremental variance in success outcomes beyond IQ, though effect sizes were moderate.
Crede et al. (2017), JPSP meta-analysissource alive
Grit is only moderately correlated with performance. IQ remains the strongest predictor of academic and professional achievement across meta-analyses.
Crede (2018), Educational Researcherpaywalled — manual check queued
Despite criticisms, the grit framework has generated productive scientific debate and drawn attention to the role of non-cognitive factors in achievement.
This claim is a stable, citable object. If you can falsify a verdict, tell us — corrections are loud here.