Check out this cool article about studies, misconceptions, & advantages when it comes to being bilingual.
http://www.npr.org/2011/04/04/135043787/being-bilingual-may-boost-your-brain-power?sc=tw&cc=share
http://www.npr.org/2011/04/04/135043787/being-bilingual-may-boost-your-brain-power?sc=tw&cc=share