Krashen

Monitor Model

(1981b., 1982)

Acquired items that pass through the affective filter to become intake.

Corder

Intake

(1967)

Language that becomes acquired and is part of the learner's developmental system.

Ellis

Variable Competence Model

(1986)

A model that focused on interaction over comprehensible input.

Dell Hymes

Communicative Competence

First proposed in reference to L1 learners, NOT L2.