Infant nocturnal wakefulness: a longitudinal study comparing three sleep assessment methods

Abstract

Although the three methods' measures of infant nocturnal wakefulness are significantly correlated during infancy, absolute agreement between these methods is poor overall. The growing disagreement between actigraphy and parental reports (in NW) across development probably suggests that parents become less aware of infants' awakenings, due to the increasing ability of infants to self-soothe. Using both objective and subjective assessment methods seems especially important after the age of 6 months.