The use of L1 in language classroom has been traditionally repressed by applied linguists. However, in recent years, it is believed that switching to L1 can be considered a pedagogical instrument by teachers rather than a heterodox. Consequently, this two-phase study was an attempt to investigate the functions that are fulfilled by EFL teachers through their use of L1. In the first phase (i.e.,...

Codeswitching is a widely observed phenomenon among bilingual speakers. By combining subword information enriched word vectors with linear-chain Conditional Random Field, we develop a supervised machine learning model that identifies languages in a English-Spanish codeswitched tweets. Our computational method achieves a tweet-level weighted F1 of 0.83 and a token-level accuracy of 0.949 without...

Children with specific language impairment (SLI) exhibit limited grammatical skills compared to their peers with typical language. These difficulties may be revealed when alternating their two languages (i.e., codeswitching) within sentences. Fifty-eight Spanish-English speaking children with and without SLI produced narratives using wordless picture books and conversational samples. The result...