PT - JOURNAL ARTICLE AU - Delavande, Adeline AU - Bono, Emilia Del AU - Holford, Angus AU - Sen, Sonkurt AU - Lesic, Vedran TI - Expectations about the Productivity of Effort and Academic Outcomes AID - 10.3368/jhr.0824-13737R2 DP - 2026 Sep 09 TA - Journal of Human Resources PG - 0824-13737R2 4099 - http://jhr.uwpress.org/content/early/2026/09/01/jhr.0824-13737R2.short 4100 - http://jhr.uwpress.org/content/early/2026/09/01/jhr.0824-13737R2.full AB - We implement a randomized information intervention to enhance beliefs about the productivity of effort on a cohort of undergraduate students at a UK university. The intervention increases first-year exam grades and GPA, with an intention-to-treat effect of 0.10 of a standard deviation. The effects are larger for men, reducing the gender gap in academic achievement by a third. The data allow us to examine the mechanisms linking the intervention to outcomes, through changes in beliefs and academic inputs, as well as its longer-term effects. We replicate the main results at another UK university, highlighting the external validity of our findings.