Inclusion Criteria:  child age at enrollment of 18-48 months; household income at or below 300% of the federal poverty line a parent fluent in English or Spanish child behavior problem as indicated by a score > 60 on the Emotionally Reactive, Anxious/Depressed, Withdrawn, Attention Problems, or Aggressive Behavior subscales of the Child Behavior Checklist 1 ½ - 5 years (CBCL 1 ½ - 5) child sleep problem as indicated by at least one of the following: score 1 standard deviation above community means on any subscale of the Children's Sleep Wake Scale or on the Sleep Anxiety subscale of the Children's Sleep Habits Questionnaire; nighttime sleep latency longer than 30 minutes; score >40 on the Children's Sleep Habits Questionnaire (CSHQ); bedtimes or wake times varying by more than 2 hours from day to day; and/or nighttime sleep duration ≤ 9.5 hr.  Exclusion Criteria:  Diagnosed developmental disabilities Serious chronic medical conditions such as autoimmune disorders or cancer A positive screen on the Sleep Disordered Breathing or Parasomnia subscales of the CSHQ or parent-reported diagnosis of obstructive sleep apnea