Specifiers and Heads covers such topics as:
* interpretation and distribution of pronouns
* ECP effects
* specifiers and phrase structure
* the role and functioning of head movement
* the architecture of grammar
Each chapter draws syntactic arguments from phenomena in a broad range of languages and brings these to bear on the structure of syntactic theory and the understanding of crosslinguistic variation. Among the languages studied are the African languages, Welsh and Irish, Norwegian, French, English and Dutch.