The book offers a detailed critique of the economy-of-derivation model of grammar that has emerged within the framework of Chomsky's Minimalist Program. It looks at the conceptual and computational complexity problems as well as the empirical consequences of both global and local economy principles. The book compares the economy-of-derivation model with a local constraint model of grammar that does not invoke conditions on sets of derivations or on possible operations in a derivation. It argues that the pure local constraint model of grammar avoids the complexity problems resulting from economy-of-derivation principles and provides a more satisfactory explanation of the linguistic facts that economy theorists have cited in support of their approach. The local constraint model also allows for a more natural and empirically well-motivated grammatical architecture than the one postulated by the Minimalist Program.

Because of the ease of their implementations, attribute-value nased theorires of grammar are becoming increasingly populaar in theoretical linguistics as an alternative to transformational accounts, as well as in computational linguistics. Mark Johnson provides a formal analysis of attribute-value structures, of their use in a theory of grammar, of the representation of grammatical relations in such theories of grammar, and the implications of different representations. A classical treatment of disjunction and negation is alo included. "Essential reading for anyone interested in recent unification-based approcahes to grammar. Johnson lucidly lays out a formal framework in which a sharp distinction is drawn between descriptions of linguistic objects and the objects themselves. Negation and disjuntion over complex features, though linguistically desirable, have given rise to many problems, and one of Johnson's main achievements is to show that they can be interpreted using classic logic." -Ewan Klein, University of Edinburgh MARK JOHNSON is assitant professor of cognitive and linguistic sciences at Brown University.