Kelly, Elaine (contributor) - 2009
children
Elaine Kellyy
University College London & Institute for Fiscal Studies
September 21, 2009
Abstract
This paper …). However, a surfeit of potential omit-
ted variables makes the mechanisms very hard to identify. Some studies have used birth … comparisons used by the existing studies, as all subjects in the data were
born in the same week. We must instead rely on …