Maestría en la Docencia del Idioma Inglés The Critical Period Hypothesis and Its Effects in Second Language Acquisition Félix Razhiel Martínez López Essay Dra. Ma. Gloria Toledo Espino January 8 th , 2018 Introduction Each year, more and more people are learning a second language/foreign language all over the world, including in Mexico. The efforts to acquire a second language is not only due to the globalization but also for the philosophy that says “the younger, the better”. Acquiring a second language can bring many benefits as: getting better employment, wider communication, higher social standards and many more advantages. One of the big issues debated and discussed by linguists and the language acquisition field is the age; the time when a person starts and stops l...