Rand, Gideon du; Broekhuizen, Hendrik van; Fintel, … - Department of Economics, Fakulteit Ekonomiese en … - 2011
attempt to correct for the sample selection on numeracy (as the test was voluntary), as well as selection into employment. We … their abilities on wages. More importantly, the sample selection adjustments allow us to control for numeracy and school … remedies for selection on the endogenous numeracy measure include instrumental variables and a “Double Heckman” approach …