Functional adequacy, task-based language teaching and instructed second language acquisition
A commentary
This commentary synthesizes the five articles in Kuiken and Vedder’s special issue on functional adequacy in
linguistic performance. The commentary considers the different scales that were used to measure functional adequacy, as well as
the relationship between functional adequacy and other measures of linguistic performance such as complexity, accuracy, and
fluency. The commentary also considers how functional adequacy might be usefully incorporated more frequently into studies from a
task-based language teaching or instructed second language acquisition perspective, both as pedagogical instruction and as a means
of measuring linguistic development.