Howard Raiffa is a professor at Harvard Business School who has a background in game theory and competitive decision making skills. He is also affiliated with the Harvard Program on Negotiation [website]. I was first exposed to this text in a Harvard symposium on collaborative negotiation that I attended 10 years ago. Raiffa's book is a popular text for academics who are interested in negotiation skills.
In this book, Raiffa likes to distinguish between the "art" of negotiation and the "science" of negotiation. By "art of negotiation" Raiffa means dealing with the human element. By "science" Raiffa means those aspects of the negotiation process that are capable of being analyised in a fairly structured manner.
Raiffa devotes most of this book on the "science" of the subject and uses his background as a game theorist specializing in competitive decision making as the basis for a rather analytical approach to the subject. It helps, but is not necessary, if you have a background in mathematics. If you are not math literate, skip the math and focus on the conclusions and you will do fine. Like most game theorists, Raiffa is mainly interested in determining which outcomes to negotiation are optimal for both parties. Much of his analysis is based on the premise that both parties will act in an ultimately rational manner and make decisions that will be optimal for themselves. (Note to game theorists- most of Raiffa's analysis tends to focus on the various "equilibrium points" that parties have when they negotiate.)
Of course, reality is somewhat different. Real life does not lend itself easily to mathematical models. People usually act irrationally when they negotiate and it is difficult, if not impossible, to quantify human emotions with a formula.
Nevertheless, this book is useful for people who want an analytical approach--as opposed to strategic and tactical approach-- to the subject of negotiation. The subtitle of the text ("How to resolve conflicts and get the best out of bargaining") is a little misleading. There is not much "how to" covered in this text. Rather the emphasis is on theory and analysis.