Grit: The Power of Passion and Perseverance · chapter 5 · id grit-c5-05-grit-can-be-developed-at-any-a
“Grit can be developed at any age -- it is not a fixed trait determined in childhood but continues to grow through deliberate effort and experience.”
BSconfidence: medium⚠ extracted by pipeline, re-audit pending
Receipts
PMC (2016) - True grit and geneticssource alive
Grit was 37% heritable, leaving significant non-genetic variance. However, shared environmental influence was negligible.
Brookings - Time to Flit the Gritsource alive
There is currently no compelling evidence that grit can be taught or that grit interventions produce lasting changes in behavior.
Crede (2018), Educational Researcherpaywalled · manual check queued
The evidence that grit can be changed through interventions is currently weak, and the claim that it can be 'grown' remains largely aspirational.
This claim is a stable, citable object. If you can falsify a verdict, tell us. Corrections are loud here.