No. That's the point of a well designed experiment. If you have three groups of researchers - one perfectly impartial, one convinced ghosts are real, and the third convinced ghosts are imaginary, then in a well designed experiment you will get similar results from all three. At the end of the experiment, the conclusions are not determined by asking the researchers "so are ghosts real or not?" The conclusions are presented by the PI or someone else on his team who has taken the results, unblinded them and determined whether or not the capacitor discharged due to being in the haunted house. Agreed. But from such a study you could conclude, at most, "some people believe in ghosts" or "some people are afraid of ghosts." And that's not that interesting a conclusion, since we know that already. Wasn't the movie "Ghost" totally uplifting and happy?