Skip to main content

Advertisement

Table 4 Estimated impacts of pre-school, school, and post-school experiences on verbal cognitive skills: alternative variable specifications (N = 1,448)

From: What determines adult cognitive skills? Influences of pre-school, school, and post-school experiences in Guatemala

   Z scores RCS + prelit Quartiles
Life-cycle stage Representation Tobit IV-GMM IV-GMM
E1 HAZ score at age 6 0.097 (0.144) 0.870 (3.520) 0.292 (0.133)
E2 School attainment 0.099 (0.030) 2.710 (0.569) 0.086 (0.026)
E3 Skilled job tenure 0.025 (0.015) 0.699 (0.386) 0.035 (0.014)
Age at interview in 2000–2004 0.140 (0.109) 3.613 (3.024) 0.208 (0.104)
Age at interview squared ×10 −0.025 (0.016) 0.658 (0.454) −0.034 (0.015)
Constant 7.035 (43.28) −0.436 (1.519)
Test diagnostics
χ2 or F statistic 61.9 19.6 14.4
[p value] [<0.01] [<0.01] [<0.01]
Hansen J test [p value] [0.26] [0.21]
Hausman test [p value] [<0.01] [<0.01] [<0.01]
  1. Instrumental variables estimation using all instruments identified in Table 2. For Tobit, we report derivatives evaluated at the mean (dP/dx)), other results are IV-GMM as in Table 3. Standard errors calculated allowing for clustering at the birth-year-community cohort level (64 clusters) are shown in parentheses below coefficient estimates which are in bold if significant at 5 % or lower; p values are in brackets