This study examined the association between sleep-wake patterns and achievements on the Bayley Scales of Infant Development, in a low-risk sample of 10-month-olds. The sleep of 50 infants was recorded at home by means of a small activity monitor (actigraph). More motor activity in sleep and more fragmented sleep pattern were moderately associated with lower mental developmental index (MDI) scores. The psychomotor developmental index (PDI) was not associated with the sleep characteristics. The finding that at the end of the first year, sleep quality accounted for a significant, albeit small, percentage of the cognitive achievement variance is in line with a model that links sleep-wake states and behavior regulation during arousal.
Bibliographical noteFunding Information:
Support for the study was provided by a grant from the Israel Foundation Trustees (1998–2000). The contribution of Eleanor Schneider, Anat Horowitz, Keren Gershgoren, Orit Raskin, Orit Harel and Annya Hillel in data collection, and of Sandra Zuckerman in data management is gratefully acknowledged. Special thanks are due to the families who participated in the study.
- Cognitive development
ASJC Scopus subject areas
- Obstetrics and Gynecology
- Pediatrics, Perinatology, and Child Health