This book is a result of a Cognitive Science program conducted to identify some of the leading issues and approaches that dominate in cognitive science research. The discussion is organized under four groups: psychological theories, mental representation, cognitive development, and semantic theory.

This book is a result of a Cognitive Science program conducted to identify some of the leading issues and approaches that dominate in cognitive science research. The discussion is organized under four groups: psychological theories, mental representation, cognitive development, and semantic theory.

Stephen Schiffer presents a groundbreaking account of meaning and belief, and shows how it can illuminate a range of crucial problems regarding language, mind, knowledge, and ontology. He introduces the new doctrine of 'pleonastic propositions' to explain what the things we mean and believe are. He discusses the relation between semantic and psychological facts, on the one hand, and physical facts, on the other; vagueness and indeterminacy; moral truth; conditionals; and the role of propositional content in information acquisition and explanation. This radical new treatment of meaning will command the attention of everyone who works on fundamental questions about language, and will attract much interest from other areas of philosophy.