Reddit reviews Father and Child Reunion: How to Bring the Dads We Need to the Children We Love

Typically a single father family will do better than a single mother family, although considering that it is much less common it seems likely that many of the men who would end up being single fathers are simply more engaged parents.

I can't cite any research on this, but I suspect fathers with custody deny access to the mother with less frequency than mothers do. This is based mostly on my own experience with many separated fathers. Whether this is out of the goodness of their hearts or out of fear of a judge reassessing a case is a personal thing.

Research is limited, partly because single fathers are rare compared to single mothers and partly because there is still a a cultural dismissal of fatherhood. I did find this paper which suggests that academic performance between single-mother and single-father families are roughly the same (with two-parent families outperforming both).

Warren Farrell, who wrote a book called "Father and Child Reunion" says:
>While the intact family is the winner, Father and Child Reunion makes it clear why, if divorce cannot be prevented, children being primarily with their dads gives children more of both parents than when they are primarily with their mothers; reduces a mother's economic dependency on a man, and reduces men's ten times greater suicide rate after divorce.

>Does Dr. Farrell conclude, then, that men are better at fathering than women are at mothering? No. But he does conclude that we have been waging a "War Against Fathers" – and mothers and children are among the losers.

I don't know of any research on two fathers, although I imagine they would tend to do a decent job since they would have to actively seek out a child instead of just having one "just happen" to them.