This book gave me a headache. On one hand I still feel dissatisfied with the scientific approach to managing people presented mostly in the first half of the book, and on the other hand it seems that I agree with with a lot of conclusions suggestions presented in the second Half.
After reading about 1/3 of the book I was so repulsed that I immediately posted a review with one star. To be fair though I had to add another star after a while, and now it is a third time I do so. Lessons learned for me - never ever again post a review until you actually finish a book.
But as for the review itself.... I was biased a bit towards this book from the beginning. I knew that the presented approach is purely behavioral, and I disagree that that's all in terms of human relations and motivation. First part of the book deeply ensured me that this is the approach in this book indeed and because of that I would be very hesitant to recommend this book to anyone who deals on daily basis with the creative work. There are some specs of wisdom, there are some usefull tips, but i still have a feeling that this book was written to targer the different workforce that I have contact with. If you are running the cotton plantation, or a factory and you have to deal with repetitive, uninteresting tasks and/or uneducated workforce, you may find the approach presented in this book as useful. Or perhaps you are absolutely terrible at working with people - than you will find some progress here too. But in any other case... to it at your own "risk".
This book basically leaves the impression that it teaches you how to exploit people and how to treat them as cattle or trained monkeys. This is in fact the problem with behavioral approach to human behavior at all (and that book depends on it heavily). Behavioral training is in my opinion good to develop and enforce habits... and not much beyond that. Behavioral approach in my opinion is not a viable way to treat people and their work on daily basis. Yes - it might work some time (or even often), but it is very hard to do it right, and in the end it requires constant attention and analysis of one's behavior. I wouldn't want to participate in such worker-manager relationship - not as a worker, nor as a manager.
This book was written originally in 1985, and heavily edited for the second and third edition and yet it completely ignores intrinsic motivation and self-determination theory that is being studied since 1970. Author deliberately puts other scientific and non-scientific approaches to the same basked, labeled "na-ah, some seasonal mambo-jumbo" right at the beginning of the book, and presenting "only mine work!" attitude. That self-righteous tone pisses me off in the first place, but the sole intent is bad as well. Intrinsic motivation is being studied from around 1971 and author had a lot of opportunities to incorporate that at least as some form of mention to correct that, since he also added additional chapters to next editions. He did not, and it is understandable, as it might render the entire concept presented in this book as wrong. Because of that I would at least recommend complementary study the Edward Deci experiments and what followed after (i.e. famous "Drive" written by Daniel H. Pink).
On the good side, there are some good hints, such as the fact, that positive reinforcements are better than negative, that not every one is motivated by the same things, and so on. They may drastically improve performance of a manger who does his job very poorly, but they are fairly common-sense (yes - I am using that term deliberately, exactly to counter the author's statements about common sense in the beginning of the book) to anyone who is interested in motivating people.
To be completely fair I need to add that some remarks here are very important. For once I could name the "reward the behavior not the results" attitude, and the notion that not all of us are incentiviesed in the same way, and if something is positive reinforcement for me, it does not necessarily mean that it will be to you. Also I completely agree with the notions about the annual performance review being used widely in the business today, and the overall criticism of what is happening in the HR nowadays.
In the end, I had to rate this book a stars. I disagree with the approach and philosophy used to get to the "dos" and "don'ts" in the book, but they are too important and to precise many times to ignore it.
But seriously, broaden your knowledge with the intrinsic motivation theory, after reading this book.