Implications and applications
In the previous chapters, after the introductory survey of crucial terms and notions, and a look at the kinds of technique used to study interlanguage, the early models of the 1970s were analysed. The aim throughout was to illustrate the kinds of problem that second language researchers have to wrestle with. In Chapter 6, the unsolved issues were reviewed and this was followed by an extended discussion of some more recent models and the issues they have uncovered. This final chapter, in a more or less speculative vein, will now consider where we have arrived today. It will attempt to shed light on what current research findings imply for future research and on the practical conclusions that may be drawn. The discussion will be framed within the perspective that reflects dominant themes of this book, namely knowledge, control, learnability and modularity.