The American Economic Association's registry for randomized controlled trials
Select the trial sections you'd like to search within...
240 Trials Found
K42, I26, J13, J24
J13, J22, C83
C93, D90, I28, J13
I20, I21
J13 Early childhood stimulation; other codes: I20, I25, I30, I38
JEL classification codes}: J12,J16, I15
I20; I31
C93, D83, I12, J13.
C93, D83, O15, J13.