Stephen Krashen published a number of influential books and articles about language acquisition in the 1980s, and continues to work in the field to this day. He is best known for his "Theory of Second Language Acquisition", which is described on this website. The key parts of his theory are:
- The Acquisition-Learning hypothesis.
- The Monitor hypothesis.
- The Natural Order hypothesis.
- The Input hypothesis.
- The Affective Filter hypothesis.
He summarized one of the more important parts of his theory as follows:
- [H]umans acquire language in only one way – by understanding messages or by receiving 'comprehensible input'…
Krashen explains his theories Edit
- Krashen's website, including free versions of two of his books, and a long list of articles.
- A video where Krashen talks about the importance of reading, both in native and in second languages.
Methods that fit well with Krashen's theories Edit
These methods are based, in whole or in part, on the kinds of techniques Krashen describes:
Criticism of Krashen's theories Edit
Criticism of Krashen has generally focused on the notion that input might be insufficient by itself, or that explicit study can speed up language acquisition. Researchers of Second Language Acquisition (SLA) are divided on the how people actually acquire a second language.