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Abstract: We examine the effects of 10 welfare and employment programs on single mothers’ use of Head Start for their 3- to 4-year-old children, considering concurrent program effects on employment, income, and the use of other types of childcare settings. In general, these welfare and employment experiments increased parental employment and the use of center- and home-based childcare, but decreased families’ use of Head Start. The findings suggest that two types of policies affecting low-income families—welfare and employment on the one hand, and early childhood intervention on the other—are operating independently, and may actually conflict. Policy-induced increases in maternal employment generated an increased need for childcare; however, mothers did not appear to use Head Start to meet this need, instead increasing their use of other types of care arrangements. The part-day, part-year structure of Head Start at the time of these programs and issues of eligibility are discussed as potential barriers to the use of Head Start among low-income families under a welfare system that requires parents to work. [Copyright &y& Elsevier]

We examine family and individual characteristics that predict low-income parents’ child care use, problems with child care, and receipt of public subsidies using data from three demonstration studies testing policies to promote employment for low-income parents (primarily single mothers). The characteristics that mattered most, particularly for use of center-based care were family structure (ages and number of children), parents’ education, and personal beliefs about family and work. The effects of race and ethnicity were inconsistent suggesting that generalizations about ethnic differences in child care preferences should be viewed with caution. There was little support for the proposition that many low-income parents do not need child care assistance because they use relative care. Child care subsidies and other policies designed to reduce the cost of care and to increase parents’ employment appeared to meet the needs associated with caring for very young children and for large families and were most effective in reaching parents with relatively less consistent prior employment experience. Parents whose education and personal beliefs were consistent with a preference for center-based care were most likely to take advantage of the opportunity to choose that option and to use subsidies. [Copyright &y& Elsevier]

Close packed arrays of hollow SnO2hemispheres were prepared using PMMA microspheres as sacrificial templates for subsequent sputter-deposition of SnO2films, leading to a threefold enhancement in gas sensitivity compared to non-templated (flat) films. [ABSTRACT FROM AUTHOR]