Individuals who are bilingual are actually juggling multiple identities, and from the perspective of identity, this might be considered negative by some. For instance, you may see a difference in an individual’s response to a personality test or other psychological measure based on the language the tests are in. But on the other hand, it does also give a peek into how a language can affect your worldview - which tends to come from the values endorsed by the culture of that language.
Research has linked ethnocentrism (the perception that one’s culture is superior to another) to being monolingual. This suggests that being able to communicate in a number of languages may actually lessen a person’s reliance on stereotypes which, in our increasingly globalised world, is an important and timely benefit.
And some more good news is that these benefits are not exclusive to the kids. “Learning a second language as an adult keeps certain neurons in the brain stimulated, which makes an individual less susceptible to cognitive decline as he or she ages”.