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. Author manuscript; available in PMC: 2016 May 1.
Published in final edited form as: J Health Econ. 2015 Feb 21;41:107–116. doi: 10.1016/j.jhealeco.2015.01.005

Table A7.

Base Estimation: Siblings with Discordant Environment (Birth Weight)

Dependent Variable: High School IQ
(1) (2) (3)
Neuroplasticity Genes 0.4450 (0.4456) 0.3558 (0.4420) −0.1348 (0.8174)
Standardized Birth Weight 5.3788*** (1.8519) 5.6883*** (1.7954) 6.5211** (2.5254)
G×E −0.9212** (0.3970) −0.9989** (0.3919) −1.1431** (0.5307)
Controls
 Demographic and Family SES Y Y Y
 Sibling Fixed Effects N N Y
Estimation
 Weighting by Prob. of Being in Sib Sample N Y N
N 894 894 894
R Sqr. 0.1391 0.1363 0.6986

Notes: This table performs our base estimation (Table 4) with sibling pairs that are discordant in regards to birth weight.