Being bilingual makes you smarter...and richer! So, welcome to the clever (and wealthy) region, CATALUNYA, where 84.7% of its population speak both Spanish and Catalan.
By in large, bilingualism increases executive functioning and decision-making abilities! If still you are not convinced: bilinguals earn on average $7,000 more per year than their monolingual peers. There is even evidence that it delays the onset of Alzheimer's and dementia as well as other neurological problems. Hablamos? Venga, Som-hi! Si us plau!
References: Gray Matter, Why Bilinguals Are Smarter, in The New York Times, March 17, 2012 and Generalitat de Catalunya, Department de la Vicepresidencia y Secretaria de Politica Linguistica, Catalan, language of Europe,