I'm hypothesizing two things: (a) group supervision is as effective as individual supervision and (b) electronic supervision (e.g., Skype, phone, telemed) is as effective as face-to-face supervision. But I want to see what the scientists have found on this. If it helps, I'm a mental health worker (boarded neuropsychologist), so I'm particularly interested in studies on clinical supervision in the mental health arena, but I'll take any study results that loosely address these two issues. Thanks!