Grit: The Power of Passion and Perseverance · chapter 4 · id grit-c4-06-grit-scores-increase-with-age-

“Grit scores increase with age, with older adults consistently scoring higher on the Grit Scale than younger adults.”

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

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

Grit scores increased monotonically with age in a cross-sectional sample, even after controlling for education.

Journal of Demographic Studies - Does Aging Make Us Grittier?source alive

Grit showed no association with age in longitudinal analysis, even after controlling for education. The cross-sectional age-grit relationship likely reflects cohort differences, not developmental change.

PMC (2022) - Grit and successful aging in older adultssource alive

Among older adults, grit was associated with successful aging outcomes, but the age-grit relationship was not linear beyond middle age.

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