We define bilingual as a person who speaks two languages, that is, speaks, reads and writes the two languages ​​in question perfectly. In general, one of these languages ​​is her native language and the other she acquires thanks to the study of it.

And, on the other hand, when a text, a document, is written in two languages, it will be said that it is also bilingual.

Bilingualism (a person’s ability to use two languages ​​interchangeably) can be native or acquired. If a child is the child of Mexicans but was born and raised in the United States, he or she is likely to be native bilingual, since at home, he or she will speak Spanish, while at school and in general life he/she appeal to English.

On the other hand, if a person is born and lives his whole life in Chile, but studies German from the age of five, when he reaches a certain age he will master this second language perfectly, in addition to his native Spanish. It will therefore be a case of acquired bilingualism.

The notion of bilingual, therefore, is associated with a perfect command of two languages ​​that the individual can use in an indistinct way (that is, they can express themselves without problems in both languages). A subject who has knowledge of another language in addition to her mother tongue will not be bilingual, since she cannot express herself fluently.

In recent years, in countries like Spain, bilingualism has gained special relevance. A good example of this is that in more and more schools, both schools and institutes, we move to an education based on that. Therefore, many of the classes are taught by teachers in English so that students, from an early age, become fluent in the language that has come to be considered the universal language: English.

Specifically, the different government institutions have committed themselves to this type of education, based on the Spanish and Anglo-Saxon languages, because it is considered that it entails a significant number of benefits for children and young people.

A language is defined by a set of sounds or as a code that serves to communicate and represents our first link to the world. The newborn who cries and cries when he comes into the world does so to express himself and get attention. Words, syntax, grammar, everything that comes after and contributes to building our mental universe that helps structure the way we perceive the world. A bilingual can use two linguistic reference systems to describe a feeling or express an idea. For a long time it was thought that this could lead to confusion, especially among children of a younger age.

After 1962, thanks to a study by Pearl and Lambert on the relationship between bilingualism and intelligence, the scientific trend changed course. In recent decades, several studies have highlighted the existence of a «metalinguistic awareness», that is, a predominant attitude among bilinguals to solve cognitive enigmas without going through language: as if, faced with a mathematical equation, a bilingual had more ability to solve that.