Bilingualism is defined as the ability to speak and/or write in two languages. How one acquires the skill to be bilingual has been a subject of interest for many researchers. over the past years researchers have identified that children from ages 1-3 tend to be more fluent in learning a second languages than adult, this occurs during Critical period. According to studies, this is the stage when a child absorbs all the necessary developmental processes, including language; the child has more advantages of speaking multiple languages. Further, it is no surprise that there are differences between a monolingual child and a bilingual child in terms of how the critical period is shaped. Our review on bilingualism is organized around four topics: 1. How social influence attributes to language development; 2. At what age does a child develop the ability to code-switch? 3. During the critical period, what are some differences we see in bilingual children compared to monolingual children? 4. Language differentiation, and the development of bilingualism. The history of bilingualism is characterized as an inattention of revelance by researchers. People tend to think of language as a simple, unitary capacity, easily measureable, but bilingualism indicates that language is not an unitary skill, but rather bilingualism is a complex confirguation of abilities that we will discuss below in the following.

Research Questions

Critical period

Development of Bilingualism

Language teaching

Social influence on language development

Language differentiation

Consequences of Bilingualism

  • *The wide belief that bilingualism can cause confusion is contrasted by Bialystok et al. when they found that monolingual patients were diagnosed with dementia (on average) at 75.4 years, whereas, bilinguals were diagnosed (on average) at the age of 78.6. This raises the possibility that bilingualism can delay the onset of dementia (2013). see also How does bilingualism influence development?

Other pages

Monolingual vs. Bilingual Children

Language and Therapy


Sign Language

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