The main application of this theory to teaching is the emphasis on practice as the
key to second language learning. Practice builds up the weightings, response
strengths and so on that determine how language is processed and stored (Cook
1991, p.123). The classroom should therefore maximize practice by learners. This
model reminds us that language is also behaviour and skill. As Cook (1991,
p.l23) puts it: "As well as the aspects of language that are abstract or under
conscious control, there are skills learnt by doing them over and over again".