Comment Re:Experimenter as a variable (Score 1) 315
When proponents of ESP/PK talk about the 'experimenter effect,' they're considering the possibility that a skeptic can inadvertently disrupt an experiment with their own psychic abilities based on their expected outcome. In that case both the skeptic getting a negative effect and a believer getting a positive effect can be seen as evidence of psychic powers. Bem doesn't directly mention this in the article, but it's not clear that he's talking traditional experimenter's bias either.