“…Specifically, training that combines both didactic and experiential components and where the practical training involves the supervision of supervision appears to generate a more significant impact on the supervisor's professional development and practice (Baker, Exum, & Tyler, 2002;Borders, 1996;Gosselin et al, in press;Haley, 2002;Lyon, Heppler, Leavitt, & Fisher, 2008;McMahon & Simons, 2004;Vidlak, 2002). Second, it appears that the key number of training experiences, that is the minimum amount of training that is necessary to produce any discernible change in professional practice, averages between two to three consecutive training opportunities.…”