The premises behind Why Men Don't Listen and Women Can't Read Maps is that all too often, these differences get in the way of fulfilling relationships and that understanding our basic urges can lead to greater self-awareness and improved relations between the sexes. The Peases spent three years researching their book--traveling the globe, talking to experts, and studying the cutting-edge research of ethnologists, psychologists, biologists, and neuroscientists--yet their work does not read a bit like "hard science." In fact, the authors go to considerable lengths to point out that their book is intended to be funny, interesting, and easy to read; in short, this is a book whose primary purpose is to talk about average men and women, that is, how most men and women behave most of the time, in most situations, and for most of the past.