Infant sleep arrangements, infant-parent sleep, and parenting during the first six months post-partum.

The present study of 124 families examined linkages between patterns of sleep arrangement use across the first 6 months post-partum and (a) family socio-demographics, (b) nighttime sleep of infants, mothers, and fathers, and (c) coparenting distress, and mothers' emotional availability with infants and bedtime. Families were recruited when infants were 1-month-old, and infants were classified, from video data available at 3 and 6 months post-partum, into one of three sleep arrangement pattern groups: Solitary sleep, cosleeping, and cosleeping (at 3 months)-to-solitary sleep (at 6 months). Mothers in cosleeping arrangements were more likely to be at higher socioeconomic risk, non-White, unemployed, and to have completed fewer years of education. Controlling for these variables and for duration of breast feeding and parental depressive and anxiety symptoms, subsequent 3 (sleep arrangement pattern) X 2 (infant age: 3 and 6 months) mixed-model analyses of covariance revealed that sleep arrangement patterns were more robustly linked with maternal sleep than with infant and father sleep. Mothers in cosleeping arrangements experienced more fragmented sleep and greater variability in fragmented sleep relative to mothers of infants in solitary sleep, and fathers in cosleeping arrangements showed greater variability across the week in the number of minutes of nighttime sleep. Cosleeping was associated with mother reports of less positive and more negative coparenting, and mothers in cosleeping arrangements were independently observed to be less emotionally available with their infants at bedtime compared to mothers in the other two sleep arrangement groups. These linkages were largely upheld after statistically controlling for mothers' stated preference for sleep arrangements they were using.

Household chaos mediates the link between family resources and child sleep.

PURPOSE: This study examined the mediational role of household chaos in the link between family resources and child sleep outcomes during the transition to kindergarten. PROCEDURES: Participants included 230 families of children entering kindergarten (50% female) who participated in an 8-day measurement burst at pre-kindergarten (July-August), early kindergarten (September/October), and mid-kindergarten (November/December). At pre-kindergarten, mothers completFed the Family Resources Scale-Revised (FRS-R), while at pre- and early-kindergarten, trained observers assessed household chaos using the Descriptive In-Home Survey of Chaos-Observer ReporteD (DISCORD). To better understand perturbations in child sleep during this transition, actiwatches (AW Spectrum Plus, Philips/Respironics, Murrysville, PA) were used to measure both child sleep duration and proportion of recommended sleep duration (9+ hours per night) at early- and mid-kindergarten. MAIN FINDINGS: Results found that family resources were more clearly predictive of child sleep outcomes than household income. Controlling for quality of coparenting and maternal depressive symptoms, household chaos mediated the link between family resources and child sleep duration at both early and mid-kindergarten, the link between family resources and the proportion of recommended sleep duration in mid-kindergarten, and the change in proportion of recommended sleep from pre-kindergarten to early-kindergarten. CONCLUSIONS: Findings highlight household chaos as a mechanism by which family resources, a metric of socioeconomic risk, influences child sleep during the transition to kindergarten.