The Threshold Hypothesis

The Threshold Hypothesis suggests that a certain level of proficiency or knowledge must be reached in one language before that language positively influences the development of the other language a person is learning. In practical terms, if someone has a strong foundation in their first language, it can support and enhance the learning of a second language, leading to better overall bilingual development. Conversely, if their first language skills are weak, this can hinder the process of acquiring a second language. Essentially, it emphasizes the importance of having a solid base in one language to facilitate learning another.