Student survey, prelim. results All performance metrics (Selectivitat, English, attendance, etc., even “Prompt_response") positively correlated Postponing_gratification (basic fundamental skill) positively correlates w. all metrics of performance Risk_loving positively correlates with Socratic Students with higher Selectivitat scores dislike Socratic Economics students like Socratic more than ADE students IBE students like Socratic more than Economics students Men study books much less than women Those attending foreign high school have worst grades (?), & like Socratic teaching much more than average

Descriptive statistics Variable Obs Mean Std. Dev. Min Max age2 367 1.50 0.79 1 4 selectividad2 4.81 1.61 8 english_lev2 2.46 0.82 grade_avg2 366 2.62 0.91 5 slides2 3.55 1.13 6 books_print2 3.75 1.29 socratic 3.93 1.94 7 explain_theory2 4.99 1.76 attendance2 4.11 1.40 risk_lover 4.00 1.51 disc_rate 12.33 13.45 2.56 42.96 grades_proportional grades relatively close 0.54 0.50 degree2 Dual degree (e.g., Law and ADE) 0.16 0.36 Economics 0.33 0.47 IBE 0.20 0.40 gender2 Male 0.46 high_school 2 0.45 3 0.14 0.34 0.05 0.22 study_abroad=Yes 0.13 reminder 0.23 0.42

Correlations age2 selectividad2 english_lev2 grade_avg2 slides2 books_print2 socratic explain_theory2 attendance2 risk_lover 1.00 -0.01 0.03 0.33 0.00 0.42 0.24 0.09 0.20 0.07 -0.03 -0.04 0.02 0.11 -0.05 0.18 0.01 -0.21 -0.16 -0.02 -0.40 -0.08 0.25 0.22 0.10 0.13 -0.18 0.17 0.04 -0.20 disc_rate -0.15 -0.10 0.06 0.08 0.05

OLS Regrs Grade_avg Socratic Books_print Age 0.09 -0.072 -0.034 0.064 -0.044 -0.026 (0.057) (0.120) (0.094) (0.121) (0.095) selectividad2 0.254*** -0.180** -0.001 0.266*** -0.195*** (0.033) (0.071) (0.055) (0.072) (0.056) english_lev2 0.058 0.081 -0.065 0.036 0.061 -0.083 (0.115) (0.090) (0.059) (0.126) (0.099) slides2 -0.008 0.003 0.134** 0.005 -0.019 0.123** (0.037) (0.078) (0.061) (0.079) (0.062) Explain_theory -0.014 -0.310*** -0.327*** -0.039 (0.024) (0.052) (0.041) attendance2 0.078** 0.1 0.089* 0.069** 0.118* 0.097* (0.031) (0.066) (0.051) Risk_lover -0.002 0.422*** 0.007 0.009 (0.028) (0.046) (0.047) disc_rate -0.005* -0.005 0.002 (0.003) (0.007) (0.005) grades dispersed widely to identify individual perf (.) grades relatively closely to each other -0.456*** -0.350** -0.437*** -0.369** 0.06 (0.084) (0.177) (0.138) (0.083) (0.139) ADE Dual degree (e.g., Law and ADE) -0.218 0.143 -0.199 -0.166 0.056 -0.209 (0.147) (0.310) (0.242) (0.146) (0.312) (0.244) Economics 0.276*** 0.383* 0.276 0.265** 0.384* 0.263 (0.104) (0.220) (0.171) (0.103) (0.172) IBE -0.024 0.857*** -0.207 -0.042 0.892*** -0.206 (0.136) (0.288) (0.225) (0.135) (0.226) Female Male 0.079 0.04 -0.475*** 0.088 0.055 -0.474*** (0.088) (0.187) (0.188) (0.148) High_school=1 High_school=2 0.264 0.133 (0.091) (0.195) (0.153) High_school=3 0.026 0.085 0.078 (0.132) (0.283) (0.222) High_school=4 -0.442** 1.000** 0.159 (0.193) (0.414) (0.324) Study abroad = No Study abroad = Yes 0.308** -0.245 -0.035 (0.130) (0.278) (0.218) Reminder -0.185* 0.129 0.323** (0.203) (0.159) Constant 1.134*** 3.999*** 3.397*** 1.189*** 3.998*** 3.328*** (0.330) (0.698) (0.545) (0.328) (0.699) (0.548) R-squared 0.296 0.303 0.317 0.309 0.041 N 366 367 * p<0.10, ** p<0.05, *** p<0.01 OLS Regrs