Some researchers, however, have argued thatthe evidence collected in support of the benefitsof meaning negotiation is not plentiful or entirelyconvincing (e.g., Foster, 1998; Porter, 1986; Ske-han, 1998). In particular, there is little researchsupporting a direct link between negotiation be-haviors and TL acquisition.
I'm not sure if this is a fair characterization. All of the studies cited are pre-Mackey.




On a personal professional note, it is sometimes infuriating the degree to which people working in this sort of usage based framework fail to see connections to other theories (like input processing) AND vice versa.