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Stigma treatments shifted the applicant baseline characteristics index by +0.174 standard deviations in Exp 1 (p < 0.05) and +0.914 in Exp 2 (p < 0.05), increasing the applicant share of wealthy jobseekers by 62% (p < 0.01) and currently employed jobseekers by 28% (p < 0.05).
Contrast $\Delta_1 = 0.002$ (95% CS: [0.000, 0.004]), showing negligible in-sample adaptive gain due to muted 6-week treatment effects. Contrast $\Delta_2 = 0.017$ (95% CS: [0.001, 0.034]), demonstrating a 35% gain in employment for the optimal targeted policy over control. Contrast $\Delta_3 = 0.006$ (95% CS: [-0.015, 0.027]), showing half the gain for an un-targeted policy.