How sleeping neonates smile

Daniel S Messinger, Marco Dondi, G. Christina Nelson-Goens, Alessia Beghi, A. Alan Fogel, Francesca Simion

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

Infants over one month of age tend to produce two types of smiling during especially positive social interactions, Duchenne smiles involving cheek raising and open-mouth smiles. Little is known, however, about the prevalence, frequency, duration and organization of these smiles among neonates. Twenty-five full-term, healthy neonates (12 female) were videotaped during six minutes of sleep. Smiles were identified and analysed using an anatomically based coding system (FA CS/Baby FACS). One-half of the neonates showed bilateral Duchenne smiles. One-quarter of the neonates showed bilateral Duchenne smiles at a mature level of intensity whose median duration was 1 1/3 s. By contrast, open-mouth bilateral smiles occurred in less than one-tenth of the sample. The contrast between the more frequent bilateral Duchenne smiles and the less frequent open-mouth smile is discussed in terms of the early synergistic functioning of facial muscles and contrasted with the smiling patterns of older infants.

Original languageEnglish
Pages (from-to)48-54
Number of pages7
JournalDevelopmental Science
Volume5
Issue number1
DOIs
StatePublished - Mar 1 2002

Fingerprint

Newborn Infant
Smiling
Mouth
Facial Muscles
Cheek
Interpersonal Relations
Sleep
Organizations

ASJC Scopus subject areas

  • Psychology(all)
  • Developmental and Educational Psychology

Cite this

Messinger, D. S., Dondi, M., Nelson-Goens, G. C., Beghi, A., Fogel, A. A., & Simion, F. (2002). How sleeping neonates smile. Developmental Science, 5(1), 48-54. https://doi.org/10.1111/1467-7687.00208

How sleeping neonates smile. / Messinger, Daniel S; Dondi, Marco; Nelson-Goens, G. Christina; Beghi, Alessia; Fogel, A. Alan; Simion, Francesca.

In: Developmental Science, Vol. 5, No. 1, 01.03.2002, p. 48-54.

Research output: Contribution to journalArticle

Messinger, DS, Dondi, M, Nelson-Goens, GC, Beghi, A, Fogel, AA & Simion, F 2002, 'How sleeping neonates smile', Developmental Science, vol. 5, no. 1, pp. 48-54. https://doi.org/10.1111/1467-7687.00208
Messinger DS, Dondi M, Nelson-Goens GC, Beghi A, Fogel AA, Simion F. How sleeping neonates smile. Developmental Science. 2002 Mar 1;5(1):48-54. https://doi.org/10.1111/1467-7687.00208
Messinger, Daniel S ; Dondi, Marco ; Nelson-Goens, G. Christina ; Beghi, Alessia ; Fogel, A. Alan ; Simion, Francesca. / How sleeping neonates smile. In: Developmental Science. 2002 ; Vol. 5, No. 1. pp. 48-54.
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