Rule Out Placebo Effects The Pervasive Problem With Placebos in Psychology : Why Active Control Groups Are Not Sufficient to

@inproceedings{Boot2013RuleOP,
  title={Rule Out Placebo Effects The Pervasive Problem With Placebos in Psychology : Why Active Control Groups Are Not Sufficient to},
  author={Walter R. Boot and Daniel J. Simons and Cary Stothart and Cassie Stutts},
  year={2013}
}
To draw causal conclusions about the efficacy of a psychological intervention, researchers must compare the treatment condition with a control group that accounts for improvements caused by factors other than the treatment. Using an active control helps to control for the possibility that improvement by the experimental group resulted from a placebo effect. Although active control groups are superior to “no-contact” controls, only when the active control group has the same expectation of… CONTINUE READING