C93 (field experiment), J24 (Human Capital • Skills • Occupational Choice • Labor Productivity
C93, D84, D91, Q54
I22, I23, I24, C93
C91, D31, D63, D91
C93, I10
C01, D91, I12
I24, C93, J15
C78; D47; D74; D78; D82
A23, C93, J24, O31, L86, I31
JEL: C93, I21, J13