A group of scientists at the University of Chicago have shown that if we think in a foreign language, we can actually make better decisions. They looked into something called decision bias, which occurs when our emotions cloud or negatively influence our ability to think clearly about something. The scientists found that thinking in a foreign language reduces decision bias, causing people to think more logically, with less emotion.
There is some recent research that shows an interesting connection between music and learning. Fabrice Dossville a researcher at a university in France did an experiment with 249 students of sports psychology. He divided them into two groups of equal academic ability. Each group listened to a one-hour lecture on sports psychology. One group listened to classical music in the background during the lecture. The other group listened to the lecture with no music. After the lecture, they took a test to see how much they could remember. The group that listened to classical music did much much better on the test.