Final answer:
Genie's early isolation resulted in her never developing a mastery of grammar, despite acquiring a significant vocabulary. The critical period for language acquisition likely influenced her language development.
Step-by-step explanation:
The impact of Genie's early isolation on her ability to acquire language resulted in her never developing a mastery of the grammatical aspects of language. While Genie was able to amass a significant lexicon after being removed from the abusive environment, her language acquisition did not include the grammatical proficiency expected of someone her age. The critical period hypothesis suggests there is an optimal time frame for learning language, and Genie's isolation during this critical period likely contributed to her challenges with grammar, despite her ability to communicate and learn words.
The early isolation that Genie experienced had a significant impact on her ability to acquire language. While she was able to build a vocabulary relatively quickly, she never developed a mastery of the grammatical aspects of language. This suggests that her early isolation may have impeded her ability to fully acquire and use language.