I'm skeptical of any argument that attempts to rationalize (worse, generalize) human behavior based on our primitive understanding of how the brain actually works. This book makes a number of such generalizations and claims, but despite that, the general relationship advice is still sound and useful: how to listen, what to listen for, how and why you should remind her (continuously) that you still love her, when to press for answers and when to back off, and more. A quick and worthwhile read.