Knowable Magazine – Ramin Skibba 
Even when you’re fluent in two languages, it can be a challenge to switch back and forth smoothly between them. It’s common to mangle a split verb in Spanish, use the wrong preposition in English, or lose sight of the connection between the beginning and end of a long German sentence. So — does mastering a second language hone our multitasking skills or merely muddle us up? (more)