Wh-word conjunction as a test for argumenthood and obligatoriness

Abstract

Some wh-words are easier to conjoin than others. For example, it has been noted that adjunct wh-words are easier to conjoin than argument wh-words. We review previous analyses of wh-word conjunction and evaluate them in light of data collected from a new acceptability judgement study. Our study replicates some previous findings but it also adds some new data to the puzzle. We further revisit the idea that wh-word conjunction can be used as a test for argumenthood, and we conclude that it can, with some caveats. In addition, we conclude that wh-word conjunction can be used as a test for obligatoriness, but only in arguments. The test does not distinguish between obligatory and optional adjuncts.