I began reading this book with great anticipation, having an interest in human psychology I was/am a believer that your upbringing has a massive impact on your personality, so naturally I thought a book on birth order would make interesting reading.
Whilst Leman, a self professed expert in this area, does make some interesting observations (generalisations!) about certain traits common amongst by people sharing the same birth order I felt the conversational, anecdotal way this information was delivered left me doubting its credibility.
Add to that Leman's all too regular references to 'God's will', which he seemed to throw in as an answer to anything he couldn't explain away with his birth order theories, and his even more frequent Leman family anecdotes (with himself as the star of course) and my interest was rapidly ebbing away.
I was however going to give Leman the benefit of the doubt and finish the book, that is until I hit page 257 where the man actually advocates spanking as a form of discipline! I know this is a very emotive and subjective area but I am still shocked that in this day and age when there has been so much publicity about the negative effects of corporal punishment that there are supposed 'experts' recommending we, in his own words, 'Swat' our children! Needless to say had I known that this book contained such advice I would not have touched it with a barge pole.
In summary, even discounting this disturbing chapter on discipline, I would say that this book doesn't offer an awful lot of reliable information and is presented in a way that shows just how clever and impressed the author is with himself which personally I find irritating in the extreme.
You don't have to look far for MUCH better books on family psychology, my advice would be not to waste your money on this one.