Relier Pairs Critical PeriodVersion en ligne Critical Period par Jenny Sanjuanita 1 The czech twins (1972) 2 Noam Chosmky 3 Genie (1970) 4 Isabelle (1930) 5 Universal Grammar Her case served to study wheter language could be taught even after critical periods for language development had been missed. Her deaf-mute mother as her only contact. She had no sense of language. They had been kept locked in insolation in a cellar with only each other for company. They little speech and communicated mostly in gestures. 1965. Proposed Language Acquisition Device (LAD) Languages need to have generalizable grammatical rules
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