Children's Health and Achievement in School

Download or read book Children's Health and Achievement in School written by Jere R. Behrman and published by World Bank Publications. This book was released on 1994 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: The differences between the instrumental variable estimates and the within family and within community estimates suggested bias. Four basic conclusions were drawn. 1) Considerable bias occurred in prior studies, because there was a failure to account for estimation problems. 2) Inclusion of instrumental variables, assumed to be independent of the disturbance term in the cognitive achievement production function, and without controls for simultaneity, suggested a downward bias. 3) The bias was upward when estimates with sibling data were accounted for. Unobserved family and community effects can cause upward biases. 4) Coefficients, which are supposed to represent the impact of child health on schooling, may not do so.