use Essay on the Origin of Languages Evolutionary linguistics Genie (feral child) Infantile speech KE family Language acquisition Language acquisition device List of children's speech corpora Mean length of utterance Metalinguistic awareness Origin of language Phonological development Pragmatic mapping Proto-Human language Speech Victor of Aveyron Reference list Further reading External links Speech and Language Developmental Milestones, Your baby's hearing and communicative development checklist Language acquisition Evolution of language Unsolved problems in linguistics Dyslexia Human evolution