<P>Introduction to Logic is clear and concise, uses interesting examples (many philosophical in nature), and has easy-to-use proof methods. Its key features, retained in this Third Edition, include: </P><P></P><UL><P><LI>simpler ways to test arguments, including an innovative proof method and the star test for syllogisms; </LI><P></P><P><LI>a wide scope of materials, suiting it for introductory or intermediate courses; </LI><P></P><P><LI>engaging examples, from philosophy and everyday life; </LI><P></P><P><LI>useful for self-study and preparation for standardized tests, like the LSAT;</LI><P></P><P><LI>a reasonable price (a third the cost of some competitors); and </LI><P></P><P><LI>exercises that correspond to the free LogiCola instructional program. </LI><P></P></UL><P></P><P> </P><B><P>This Third Edition:</P><UL></B><P><LI>improves explanations, especially on areas that students find difficult;</LI><P></P><P><LI>has a fuller explanation of traditional Copi proofs and of truth trees;