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Among literate farmers, assignment to the insurance treatment group increased cash crop investment likelihood by 15 percentage points, whereas among illiterate farmers, the treatment effect was statistically indistinguishable from zero [11, 13].
Among literate household heads, insurance provision increased the likelihood of investing in risky cash crops by 15 percentage points (p < 0.05), whereas among illiterate household heads, the treatment effect was indistinguishable from zero [9, 11].
Increased average schooling levels served as the primary mechanism explaining the 12 percentage point drop in Brazilian labor informality from 2003 to 2012, counteracting the informalization pressure from rising minimum wages.
Intention-to-treat analysis demonstrated a statistically significant increase of 0.165 to 0.175 standard deviations in socio-emotional skills measured on the PLANEA scale (p < 0.05), but no statistically significant effect on math test scores or overall enrollment.