Suggested reading by AnthemParaegal: Amato, Paul R.; Keith, Bruce – Psychological Bulletin, Vol 110(1), Jul 1991, 26-46.
Abstract:
Meta-analysis involved 92 studies that compared children living in divorced single-parent families with children living in continuously intact families on measures of well-being. Children of divorce scored lower than children in intact families across a variety of outcomes, with the median effect size being .14 of a standard deviation. For some outcomes, methodologically sophisticated studies yielded weaker effect sizes than did other studies. In addition, for some outcomes, more recent studies yielded weaker effect sizes than did studies carried out during earlier decades. Some support was found for theoretical perspectives emphasizing parental absence and economic disadvantage, but the most consistent support was found for a family conflict perspective. (PsycINFO Database Record (c) 2012 APA, all rights reserved)
Anthem Paralegal 
Good article to read.