What is the distinction of sequential bilingual acquisition?

Sequential bilingual acquisition refers to the process by which an individual learns a second language after having already acquired a first language. This typically occurs when the learner is exposed to the second language in a structured manner, often after the initial language foundation has been established.

Choosing to learn one language at a time is characteristic of sequential bilingual acquisition because it emphasizes the order of language acquisition—first mastering the primary language before beginning to learn the secondary language. This approach allows the learner to utilize their existing language skills to facilitate the learning of the new language, leading to more effective language development and cognitive processing.

In contrast, the other options do not accurately capture the essence of sequential bilingual acquisition. While learning both languages equally might suggest a simultaneous approach, focusing solely on the second language neglects the foundational role of the first language. Additionally, switching between languages without structure does not reflect the systematic nature of acquiring a second language after the first, which can lead to confusion and lack of proficiency in either language.