The article describes the three most common styles of mediation (facilitative, evaluative and transformative). According to the author, most mediators use some facilitative and some evaluative techniques. She concludes that mediators should tell parties and attorneys which style they use and the assumptions and values these styles are based on.
Styles of Mediation: Facilitative, Evaluative, and Transformative Mediation
Zumeta, Zena D.. DCBA Brief, Sep. 1, 1998http://www.dcbabrief.org/vol110998art2.html