I have to imagine that it works even _better_ if you believe it's more than just a placebo though, but it'd be interesting to see evidence! That study compared

I have to imagine that it works even _better_ if you believe it's more than just a placebo though, but it'd be interesting to see evidence! That study compared open placebo to nothing. I'd be interested in a study where one group believed they were getting a trial drug and the other group believed they were getting placebo, but really both were getting the same placebo.