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