David Bourget (Western Ontario)
David Chalmers (ANU, NYU)
Rafael De Clercq
Ezio Di Nucci
Jonathan Jenkins Ichikawa
Jack Alan Reynolds
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Review of Philosophy and Psychology 3 (3):457-467 (2012)
It has long been known that scientists have a tendency to conduct experiments in a way that brings about the expected outcome. Here, we provide the first direct demonstration of this type of experimenter bias in experimental philosophy. Opposed to previously discovered types of experimenter bias mediated by face-to-face interactions between experimenters and participants, here we show that experimenters also have a tendency to create stimuli in a way that brings about expected outcomes. We randomly assigned undergraduate experimenters to receive two different hypotheses about folk intuitions of consciousness, and then asked them to design experiments based on their hypothesis. Specifically, experimenters generated sentences ascribing intentional and phenomenal mental states to groups, which were later rated by online participants for naturalness. We found a significant interaction between experimenter hypothesis and participant ratings indicating a general tendency for experimenters to obtain the result that they expected. These results indicate that experimenter bias is a real problem in experimental philosophy since the methods and design employed here mirror the predominant survey methods of the field as a whole. The bearing of the current results on Knobe and Prinz�s :67�83, 2008) group mind hypothesis is discussed, and new methods for avoiding experimenter bias are proposed.
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Citations of this work BETA
Wesley Buckwalter (2014). Intuition Fail: Philosophical Activity and the Limits of Expertise. Philosophy and Phenomenological Research 89 (2):378-410.
Jonathan Phillips, Jamie B. Luguri & Joshua Knobe (2015). Unifying Morality’s Influence on Non-Moral Judgments: The Relevance of Alternative Possibilities. Cognition 145:30-42.
Joshua Knobe, Sandeep Prasada & George Newman (2013). Dual Character Concepts and the Normative Dimension of Conceptual Representation. Cognition 127 (2):242-257.
George E. Newman, Julian De Freitas & Joshua Knobe (2015). Beliefs About the True Self Explain Asymmetries Based on Moral Judgment. Cognitive Science 39 (1):96-125.
Nat Hansen & Emmanuel Chemla (2015). Linguistic Experiments and Ordinary Language Philosophy. Ratio 28 (4):422-445.
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