title: A tale of two theories: response to Fisher.
authors.affiliation: Max Planck Institute for Evolutionary Anthropology, Inselstrasse 22, D-04103 Leipzig, Germany. tomas@eva.mpg.de
authors.forename: Michael
authors.initials: M
authors.lastname: Tomasello
authors.forename: Kirsten
authors.initials: K
authors.lastname: Abbot-Smith
mesh_terms: D002675:Child, Preschool; D006801:Humans; D007223:Infant; D007804:Language Development; D010700:Phonetics; D011578:Psycholinguistics; D012660:Semantics; D014706:Verbal Learning