The reasons why we lie and to what extent we’re willing to lie are pretty fascinating, and if you haven’t read anything else of the sort before, this might be pretty revelatory. Ariely explains the various studies and results pretty clearly, and it’s definitely not aimed at people who have actually dug into the academic publications: it’s accessible to a layperson, definitely, and to my mind pretty much aimed at the layperson. At any rate, I didn’t find any of it surprising, because I’ve read most of this before and know something of the way we’ve discovered our brains work. I’m not 100% positive there was nothing new, but there wasn’t much that didn’t sound familiar.
So, a good read if you’re looking for something on the subject, but probably not much point if you’re already pretty aware of research into dishonesty and why we lie.