There were multiple experiment groups at the beginning, but I'm not sure if any are left besides Good Judgment. DAGGRE, the prediction market group, is out. Ed

There were multiple experiment groups at the beginning, but I'm not sure if any are left besides Good Judgment. DAGGRE, the prediction market group, is out. Edit: Oops, I misunderstood. Apparently Good Judgment also has a prediction market group inside of it. Thanks nbouscal.