title: Social development.
authors.affiliation: Section on Social and Emotional Development, National Institute of Child Health and Human Development, Bethesda, Maryland 20892.
authors.forename: M E
authors.initials: ME
authors.lastname: Lamb
mesh_terms: D002657:Child Development; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007398:Interpersonal Relations; D009769:Object Attachment; D010287:Parent-Child Relations; D010379:Peer Group; D012801:Sibling Relations