Panel A | Representation | Verbal skills | Nonverbal skills |
---|---|---|---|
Life-cycle stage | IV-GMM | IV-GMM | |
E1 | HAZ score at age 6 | 0.174 (0.122) | 0.296 (0.145) |
E2 | School attainment | 0.084 (0.023) | 0.020 (0.041) |
E3 | Skilled job tenure | 0.037 (0.015) | 0.150 (0.021) |
Age at interview in 2002–2004 | 0.149 (0.098) | −0.016 (0.105) | |
Age at interview squared ×10 | −0.025 (0.015) | −0.004 (0.015) | |
Constant | −2.208 (1.415) | 1.132 (1.702) | |
Test diagnostics | |||
F statistic | 16.1 | 27.8 | |
[p value] | [<0.01] | [<0.01] | |
Hansen J test [p value] | [0.16] | [0.13] |
Panel B | First-stage diagnostics | ||
---|---|---|---|
Endogenous variable | F statistic on instruments excluded in second stage | [p value] | |
E1 | HAZ score at age 6 | 7.8 | [<0.01] |
E2 | School attainment | 12.9 | [<0.01] |
E3 | Skilled job tenure | 24.6 | [<0.01] |
Kleibergen–Paap Wald F statistic | 6.9 | [<0.05] |