Stephen Krashen

Stephen D. Krashen, born on May 14, 1941, is a prominent American linguist whose groundbreaking work has significantly influenced the field of second-language acquisition. He is best known for formulating the input hypothesis, which is part of a comprehensive framework consisting of five key hypotheses that explore how individuals learn new languages.

With a distinguished career in academia, Krashen serves as a professor emeritus of education at the University of Southern California. His transition from the linguistics department to the School of Education in 1994 marked a pivotal moment in his career, allowing him to focus on the practical applications of his theories in educational settings.

Throughout his career, Krashen has authored numerous publications that delve into the intricacies of language learning and teaching. His insights have not only shaped educational practices but have also sparked discussions and debates within the linguistics community.