Maternal stress, sleep, and parenting (N = 314; child age M = 2.60, SD = 0.07 years), maternal stress was indexed with a cumulative risk score that combined sociodemographic risks and common parent stressors. Mothers who experienced shorter, later, and more variable sleep experienced higher stress.

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Maternal stress, sleep, and parenting (N = 314; child age M = 2.60, SD = 0.07 years), maternal stress was indexed with a cumulative risk score that combined sociodemographic risks and common parent stressors. Mothers who experienced shorter, later, and more variable sleep experienced higher stress.