It is important to note the distinction between translingualism and similar linguistic concepts like bilingualism, multilingualism, and ambilingualism.
Neurological studies of multilingualism are carried out with functional neuroimaging, and through observation of people who have suffered brain damage.
Multilingualism and bilingualism lead to greater efficiency of use in the brain, and organize the brain to be more efficient and conservative in using energy.
He was a scholar in various fields of linguistics, including sociolinguistics, pragmatics, bilingualism and multilingualism, second language learning, contact linguistics and intercultural communication.
Some bilinguals feel that their personality changes depending on which language they are speaking; thus multilingualism is said to create multiple personalities.