Good point. I was thinking only in US terms.Actually quite a bit of universities (and remember the qualifier: educated foreigners) around the world teach their courses in English. Learning two language (English being particularly popular as a second) is just part of the culture for many western countries outside the U.S., it's not so much about being "drawn to". But most of them learn it later (like after 7 or so).
The article you linked to made the claims I quoted. They weren't talking about linguistic flexibility, per se, but:And it's not about creative or flexible; It's about sticking to the formal rules. In fact, a native English speaker might be more flexible and have a better idea of context and slang and just plain social slurs ("ya'll yump to and warsh my clothes" is very much an American dialect. You will not hear very many people learning English as a 2nd language using that kind of dialect). Yet, in much of the US, it's socially acceptable to break the rules (ebonics comes to mind).
The point I take from that being that the mere ability to speak coherently in a foreign language, not necessarily to pass for a native of Arkansas or the Bronx, makes a person a better thinker and problem solver. According to them....the multilingual shows superior performance in handling complex and demanding problem-solving tasks when compared to monolinguals. They seem to be able to have an advantage in handling certain thinking processes," March continues.
Some foreigners will do better on an English test than the average American, for sure. What I was saying is that the meme that all of them will is not true in my experience. A lot of educated foreigners have studied English for years and still make wacky grammar mistakes. What you are saying, that many will do better because they stick to the rules and don't adopt the "flexibility" of the average American, is also true.
That's not universal either, though. I've met a lot of foreign exchange students and they are often determined to pick up every bit of slang and natural American speech they can. They want to fit in with the Americans their age.