abstract: 'This article evaluates the effects of maternal vs. alternative care providers'' time inputs on children''s cognitive development using the sample of single mothers in the National Longitudinal Survey of Youth. To deal with the selection problem created by unobserved heterogeneity of mothers and children, we develop a model of mother''s employment and childcare decisions. We then obtain approximate decision rules for employment and childcare use, and estimate these jointly with the child''s cognitive ability production function. To help identify our selection model, we take advantage of the plausibly exogenous variation in employment and childcare choices of single mothers generated by the variation in welfare rules across states and over time created by the 1996 welfare reform legislation and earlier State waivers. (C) 2009 Elsevier B.V. All rights reserved.' affiliation: 'Keane, MP (Corresponding Author), POB 123, Broadway, NSW 2007, Australia. Bernal, Raquel, Univ Los Andes, Dept Econ, Bogota, Colombia. Bernal, Raquel, Univ Los Andes, CEDE, Bogota, Colombia. Keane, Michael P., Univ Technol Sydney, Sydney, NSW 2007, Australia. Keane, Michael P., Arizona State Univ, Tempe, AZ 85287 USA.' author: Bernal, Raquel and Keane, Michael P. author-email: michael.keane@uts.edu.au author_list: - family: Bernal given: Raquel - family: Keane given: Michael P. da: '2023-09-28' doi: 10.1016/j.jeconom.2009.09.015 eissn: 1872-6895 files: [] issn: 0304-4076 journal: JOURNAL OF ECONOMETRICS keywords: 'Child cognitive development; Childcare; Human capital; Female labor supply' keywords-plus: 'WELFARE EFFECTS CONSISTENT; EARLY MATERNAL EMPLOYMENT; PARTICIPATION; INCOME; PRESCHOOLERS; MOTHERS; FAMILY; WORK' language: English month: MAY number: '1' number-of-cited-references: '41' orcid-numbers: 'Keane, Michael P/0000-0002-3918-1377 ' pages: 164-189 papis_id: 7192d6a5fe17f3c25dd95c2e3d3621e4 ref: Bernal2010quasistructuralestim researcherid-numbers: 'Keane, Michael P/O-2840-2013 Keane, Michael/R-6329-2019' times-cited: '60' title: Quasi-structural estimation of a model of childcare choices and child cognitive ability production type: Article unique-id: WOS:000277219000012 usage-count-last-180-days: '0' usage-count-since-2013: '24' volume: '156' web-of-science-categories: 'Economics; Mathematics, Interdisciplinary Applications; Social Sciences, Mathematical Methods' year: '2010'