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
Receipts
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.