The Center for Legal Solutions has pulled together a nice collection of research studies on various aspects of the mediation process. The collection is called [url=http://www.centerforlegalsolutions.org/research.overview.shtml]Practical Research on Alternative Dispute Resolution[/url]. If you are looking for a quick snapshot of the kinds of research that has been done on mediation, this is a great place to start. Includes a listing of [url=http://www.centerforlegalsolutions.org/links.adr.scholars.shtml]ADR Researchers[/url] active in the field.