How anyone seriously interested in the subject matter of this book can only give it one star has me stumped. It is a fantastic introduction to psychology.
The book is brilliant on two levels: the content, as Pinker gives a blow-by-blow account of how our minds function (or at least our best guess), and the style in which it is written. There are some very complex ideas here and yet Pinker takes pity on the reader and makes his writing accessible, with the occasional joke thrown in. As a regular reader of turgid tomes on linguistics, I appreciated this - I particularly liked the joke on p549 about double affirmatives, but maybe that's an acquired taste. (Search for "relish" in the text if you think it'll tickle your fancy.)
The jokes are good, but the content is even better: the computational theory of mind, how the human mind evolved, the psychology of vision, how we reason about the world, our emotions, family relationships and, er, the meaning of life. Pinker discusses all of these lucidly, and although most of the ideas are drawn from the works of others, Pinker's ability to synthesise these and present them together coherently is incredibly impressive.
I've read the views of other philosophers and psychologists (Dennett, Blackmore...) on the nature of the human mind with dismay: the self and consciousness are illusions, we are all basically zombies, etc., etc. I was beginning to think I was just a stick-in-the-mud who was unable to face up to reality. Pinker has come to my rescue - he sticks his neck out and when I read the words "I am as certain that I am sentient as I am certain of anything", I nearly stood up and cheered. But, hey, that's just me.
They say beauty is in the eye of the beholder and I suppose the same goes for book reviews. Some of the other reviews are incomprehensible - I'm not sure if they read the same book I did.