Internal DP heads in restrictive relative clauses

In this paper, I show that restrictive relative clauses can be internally headed by a DP, not, as is standardly assumed, an NP. Syntactically, the internal copy of a relative clause head licenses constructions that I show can only be licensed by a full DP: movement out of weak islands and parasitic gapping. Semantically, relative clause heads hosting ACD sites show scopal sensitivity to elements inside the relative clause, which requires an analysis with a full copy of the DP head originating inside the relative clause. Based on both theoretical considerations of licensing ellipsis and empirical diagnostics, I argue that relative clauses require a modified matching analysis, such that a full copy of the DP hosting the relative clause originates inside the relative clause itself, with second copy of the DP in the matrix clause.