Applied linguistics is an interdisciplinary field that identifies and solves real-world language problems. It applies the knowledge of linguistics to improve practical tasks involving language. Some related fields are education, psychology, communication research, anthropology, and sociology. Applied linguistics investigates language learning and teaching problems, the role of language in culture and society, and finds solutions to language issues linguistics cannot solve alone. It covers domains like computational linguistics, sociolinguistics, psycholinguistics, neurolinguistics, and others.