Notes: (1) Academic ability is the average mark of the academic transcript up to the time of the experiment. This information was self-reported by the participants. In the Spanish system, grades fluctuate from 0 to 10, requiring a 5 to pass.

(2) In relation to undergraduate majors, in the category = 0 were included: Business, Business and Law, Economics, Marketing, and Tourism.

(3) For binary or dichotomous variables such as gender and undergraduate majors, and also for a set of dummy variables such as treatment-control groups, the mean represents the percentage of experiment participants in each category