The short answer to the question is clear: Yes.
Here’s a summary of the current research on divorce mediation…
Researchers have conducted more than 50 studies since divorce mediation first appeared more than two decades ago. As one researcher puts it, the easiest research has already been done, i.e., comprehensive research on the outcomes of mediation. Enough data has been collected and enough analysis conducted to begin drawing clear conclusions about whether mediation works. Along several key axes, the answers are encouraging.
Divorceinfo.com – Does it Work?