Grit: The Power of Passion and Perseverance · chapter 3 · id grit-c3-06-over-the-long-run-strivers----

“Over the long run, 'strivers' -- people with less talent but more effort -- tend to outperform 'naturals' who rely on innate ability.”

contestedconfidence: high⚠ extracted by pipeline, re-audit pending

Receipts

Duckworth et al. (2007), JPSPDOI registry: valid

Grit accounted for significant incremental variance in success outcomes over and beyond IQ.

Crede et al. (2017), JPSP meta-analysissource alive

Grit's incremental validity beyond conscientiousness and cognitive ability is near zero.

Polderman et al. (2015), Nature Genetics heritability meta-analysissource alive

Cognitive ability is approximately 50% heritable and remains the strongest single predictor of academic and professional achievement across meta-analyses.

This claim is a stable, citable object. If you can falsify a verdict, tell us — corrections are loud here.