“…Carroll, 1963), grit (e.g. Duckworth et al, 2007), intrinsic motivation, self-motivation, and other executive function skills (such as in Cunha et al, 2010;Gneezy et al, 2019;Kosse et al, 2020;Cappelen et al, 2020), to describe time preference, our metric is theoretically-driven, clearly defined, and quantifiable. Likewise, while aptitude, cognitive ability, and innate ability have been used to measure academic efficiency, we develop a theoretically-consistent metric that is easily obtained and correlates with key observables.…”