My major problem with this book is that the writer claims that (1 in 25 ) or 4 percent of the population are sociopaths. This simply is not true. The correct stats are as follows: 2 percent of the population displays antisocial behaviour & of that 2.5 percent are sociopaths. So right off the top this book is creating a very false picture of the realty of the situation. Also, I found it odd that after 25 years of practice the writer presented only 3 profiles in this very thin volume.