Issues addressed in this contributed volume include lexical semantics, morphosyntax, and phonology based on the broad theme of formal approaches to language universals and variation. Aspects of natural language variation are investigated from a formal theoretical perspective, including the Principles and Parameters/Minimalist Program, Lexical Functional Grammar, and Optimality Theory. A wide range of languages and language families are considered, including Amharic, Arabic, Bantu, Berber, Chamorro, English, French, Japanese, Malyalam, Polish, Spanish, Tagalog, Turkish, and Warlpiri.