A re-examination of the infant social world.
D000818:Animals; D002656:Child Day Care Centers; D002657:Child Development; D000882:Haplorhini; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D010287:Parent-Child Relations; D010553:Personality Development; D012801:Sibling Relations; D012931:Social Environment