Three studies examined associations between early child care and child outcomes among families different from those in the National Institute of Child Health and Human Development (NICHD) Early Child Care Research Network study. Results suggest that quality is an important influence on children's development and may be an important moderator of the amount of time in care. Thus, the generalizability of the NICHD findings may hinge on the context in which those results were obtained. These studies, conducted in three national contexts, with different regulatory climates, ranges of child care quality, and a diversity of family characteristics, suggest a need for more complete estimates of how both quality and quantity of child care may influence a range of young children's developmental outcomes.

One strand of home visiting research investigates effi cacy while another investigates under what conditions programs achieve outcomes. The current study follows the latter approach. Using a within-program design in a sample of 11 home-based sites in the Early Head Start Research and Evaluation study, this study found that three components of home visits (quantity of involvement including number of home visits, duration in the program, length of visits and intensity of service; quality of engagement including global ratings of engagement by staff and ratings of engagement during each home visit; and the extent to which home visits were child focused) represented distinguishable aspects of home visit services. Demographic variables predicted components of involvement, and home visit involvement components were differentially related to outcomes at 36 months, after controlling for demographic/family factors and earlier functioning on the same measure. Only one quantity of involvement variable (duration) predicted improvements in home language and literacy environments at 36 months. Quality of involvement variables were negative predictors of maternal depressive symptoms at 36 months. Finally, the proportion of time during the visit devoted to child-focused activities predicted children's cognitive and language development scores, parent HOME scores, and parental support for language and learning when children were 36 months of age. Implications for home visiting programs and policies are discussed.

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In this article, we use data on biological fathers (n = 597) and mothers (N = 1,550) from 12 sites of the Early Head Start Research and Evaluation Project (EHS study) to examine the type and frequency of father involvement. We use a three-part model of father involvement to examine whether fathers participating in the EHS study are accessible to, engaged with, and show responsibility for their two-year-old children. We also examine patterns of reported father involvement by relationship status and residency. We find that more than 80% of all two-year-old children in the EHS study have accessible biological fathers, with the majority of nonresident boyfriends and nonresident friends and more than a 5

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