Double-blind studies control for

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     the placebo effect and the experimenter effect.
      extrinsic motivation.
      the placebo effect.
      the experimenter effect.
asked May 17, 2013 in Psychology by anonymous
    

1 Answer

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the placebo effect and the experimenter effect.
answered May 18, 2013 by ProAnswers ~Top Expert~ (7,505 points)

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