Some people are repeaters. Medial copy spell-out in long-distance wh-dependencies

This article addresses a number of unresolved issues regarding the spell-out of wh-phrases in intermediate SpecCPs in partial wh-movement and wh-copy constructions. I argue that intermediate SpecCPs are potential terminal landing sites and as such count as the head of a chain. Due to the general requirement for spelling out heads of chains, a wh-phrase may and in some cases must be spelled out in this position. I argue that this analysis satisfactorily explains a range of problematic facts regarding the spell-out of intermediate wh-phrases.