Here is a international journal I haven’t seen before on biligualism- I am not a cognitive psychologist so some of the term are a bit unfamiliar. https://www.cambridge.org/core/journals/bilingualism-language-and-cogniti... Reminds me of the scientific studies of reading which publishes a lot around L1 L2 and dyslexia. https://www.tandfonline.com/journals/hssr20 MDB