0120 Interactions between Temperament and Parent-Child Relationship Quality in Early Childhood and Sleep in Middle Childhood

Abstract Introduction Effects of child temperament on biopsychosocial outcomes, including sleep, are known to differ based parent-child relationship quality (PCRQ). However, previous studies have primarily focused solely early childhood, relied subjective reports PCRQ and neglected examine variability in which is an important dimension sleep health. We examined whether there were interactions between objectively measured during childhood association with actigraphy (average variability) middle childhood. Methods Participants included 90 preschoolers (mean age=4.24 years, SD=0.81) who 47% female; 37% White, 17% Black, other racial groups; 46% Hispanic. Thirty-four percent experienced moderate severe maltreatment. was coded from a video-recorded free-play task each their primary caregiver. Child dimensions Activity Level, Anger, Social Fear, Inhibitory Control, Appropriate Attentional Allocation the parent-report Toddler Behavior Assessment Questionnaire. Mean SDs total time (TST) efficiency (SE) generated data collected for two weeks follow-up study when participants ages 8-11. Results There no direct effects any variables or sleep. In models adjusted demographic characteristics number adversities experienced, greater attentional allocation associated average TST only among those children high (estimate = 20.59, 95% CI 5.19, 35.99). For every one unit increase score (possible range 1:7), more than 20 min mean TST. contrast, activity levels better efficiency, low 2.35, 0.46, 4.24). level score, 2% efficiency. Conclusion Findings extend cross-sectional research provide support showing that differing susceptibility depending PCRQ. Support (if any) NIMH R01 MH083704, NICHD HD086487, NICHD, HD095837, SRCD Small Grant Early Career Scholars, T32HD101392, NIGMS P20 GM139767.