ABSTRACT
This chapter analyses the fact that some children produce intermediate copies when they form long-distance questions. It discusses medial-whs in English-speaking children. The chapter shows that medial-whs are really derived through successive cyclic movement. Nunes. J attempts to give a comprehensive theory of Spell-Out at the PF interface. Nunes derives the ban on chains where multiple members of a chain are phonetically realized from linearization requirements. The chapter argues that children are overgeneralizing the licensing requirement on null-complementizer affixes and that this is different from what adults are doing in languages that have medial-whs. In the late 1970s, the question of variation among languages became more and more pressing within Chomskyan generative grammar. A theory that distinguished between principles and parameters was developed. Chomsky has argued that there should be no variation among languages at the level of Logical Form, the Uniformity Principle. A prominent proposal is to locate the variation in the lexicon, as differences related to lexical elements.
