biostudies-literatureWang HCAustralian Research Council1145-1153https://www.ebi.ac.uk/biostudies/studies/S-EPMC9543791biostudies-literatureUnknown93(4)This study explored whether a daytime nap aids children's acquisition of letter-sound knowledge, which is a fundamental component for learning to read. Thirty-two preschool children in Sydney, Australia (M_age  = 4 years;3 months) were taught letter-sound mappings in two sessions: one followed by a nap and the other by a wakeful period. Learning was assessed by explicit letter-sound mappings ("Which sound does this letter make?") and knowledge generalization tasks ("Here's Tav and Cav, which one is /kav/?"). Results from the knowledge generalization task showed better performance after a nap than after wake. However, no nap benefit was found for explicit letter-sound knowledge. This study provides initial evidence that naps could be beneficial for preschool children's learning of letter-sound mappings.Child developmentNap effects on preschool children's learning of letter-sound mappings.PMC9543791DP150100419Weighall ANation KCastles AWang HCGaskell MGRobidoux SfalseNap effects on preschool children's learning of letter-sound mappings.This study explored whether a daytime nap aids children's acquisition of letter-sound knowledge, which is a fundamental component for learning to read. Thirty-two preschool children in Sydney, Australia (M_age  = 4 years;3 months) were taught letter-sound mappings in two sessions: one followed by a nap and the other by a wakeful period. Learning was assessed by explicit letter-sound mappings ("Which sound does this letter make?") and knowledge generalization tasks ("Here's Tav and Cav, which one is /kav/?"). Results from the knowledge generalization task showed better performance after a nap than after wake. However, no nap benefit was found for explicit letter-sound knowledge. This study provides initial evidence that naps could be beneficial for preschool children's learning of letter-sound mappings.2022-01-01T00:00:00Z2022 Jul2025-04-04T09:29:28.415Z2025-04-04T09:29:28.415ZS-EPMC95437913534770310.1111/cdev.13753