Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Read Both of the Books and This is the One

Just look at the numbers: 1400 families in this study, something like 70 in the Wallerstein "study" (which was really just a non-scientific anecdotal case report on children who were ALREADY being seen for emotional problems - some statistically significant sampling). This book is very straight forward, and seems to strive to give you a good feel for what you can work to control during your own divorce (or maybe gives you the impetus to stay in a marriage if that's an option). I found this to be an extremely helpful book and much much much stronger than the 'other' one.