ABSTRACT
This chapter studies a peculiar Spanish interrogative structure we call IQQ which consists of two main parts, divided by a prosodic break. The leftmost part includes an invariable wh-element qué and the rightmost one is a tag whose confirmation is required. We provide a novel analysis that contends that this qué is not a standard wh-phrase, but rather an operator base-generated in the left periphery with no thematic or derivational link to the tag. Our account correctly generates other properties of IQQs, such as their monoclausality, strict adjacency between qué and the verb and the possibility of having multiple-phrase tags. We also compare IQQs and split questions and show that, despite apparent similarities, they are radically different constructions.
