Language dominance refers to the extent to which an individual or a group of individuals have a greater proficiency or use of one particular language over another language. This can be influenced by factors such as upbringing, education, cultural background, and social environment. In research, language dominance is often studied in bilingual and multilingual populations to understand how the use of multiple languages may impact cognitive abilities, language processing, and communication. Studies may investigate how language dominance changes over time, how it affects language production and comprehension, and how it relates to other aspects of linguistic competence. Overall, the study of language dominance provides insights into the complex nature of language learning and language use in diverse linguistic contexts.