Merely Possessing a Placebo Analgesic Reduced Pain Intensity: Preliminary Findings from a Randomized Design
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An experiment was conducted to examine whether the mere possession of a placebo analgesic cream would affect perceived pain intensity in a laboratory pain-perception test. Healthy participants read a medical explanation of pain aimed at inducing a desire to seek pain relief and then were informed that a placebo cream was an effective analgesic drug. Half of the participants were randomly assigned to receive the cream as an unexpected gift, whereas the other half did not receive the cream. Subsequently, all participants performed the cold-pressor task. We found that participants who received the cream but did not use it reported lower levels of pain intensity during the cold-pressor task than those who did not receive the cream. Our findings constitute initial evidence that simply possessing a placebo analgesic can reduce pain intensity. The study represents the first attempt to investigate the role of mere possession in understanding placebo analgesia. Possible mechanisms and future directions are discussed.
KeywordsPlacebo effect Mere possession Cold pressor Placebo analgesia Pain
Compliance with Ethical Standards
This research was part of a larger project supported by a Faculty Research Grant (FRG #02133) to the first author.
The research involved human participants.
Informed consent was obtained from all individual participants in the study.
The researchers obtained ethical approval from the University and complied with ethical guidelines for the treatment of human participants.
Conflicts of Interest
The authors declare no conflicts of interest.
- Aiken, L., West, S.G., & Reno, R.R. (1991) Multiple regression: Testing and interpreting interactions, Sage.Google Scholar
- Atlas, L. Y., Wager, T. D., Dahl, K. P., & Smith, E. E. (2009). Placebo effects Handbook of Neuroscience for the Behavioral Sciences: John Wiley & Sons, Inc.Google Scholar
- Barone, M. J., Shimp, T. A., & Sprott, D. E. (1997). Mere ownership revisited: A robust effect? Journal of Consumer Psychology, 6, 257–284.Google Scholar
- Beggan, J. K. (1992). On the social nature of nonsocial perception: The mere ownership effect. Journal of Personality and Social Psychology, 62(2), 229.Google Scholar
- Bonferroni, C. E. (1936). Teoria statistica delle classi e calcolo delle probabilità. Pubblicazioni del R Istituto Superiore di Scienze Economiche e Commerciali di Firenze, 8, 3–62.Google Scholar
- Brown, J. A., Oikawa, M., Rose, J. P., Haught, H. M., Oikawa, H., & Geers, A. L. (2015). Choosing across cultures: The effect of choice complexity on treatment outcomes. Journal of Behavioral Decision-Making, 28, 515–528.Google Scholar
- Burger, J. M., & Cooper, H. M. (1979). The desirability of control. Motivation and Emotion, 3(4), 381–393.Google Scholar
- Callister, L. C. (2003). Cultural influences on pain perceptions and behaviors. Home Health Care Management & Practice., 15, 207–211.Google Scholar
- Campbell, C. M., & Edwards, R. R. (2012). Ethnic differences in pain and pain management. Pain, 2, 219–230.Google Scholar
- Chan, M. Y., Hamamura, T., & Janschewitz, K. (2013). Ethnic differences in physical pain sensitivity: Role of acculturation. PAIN®, 154(1), 119–123.Google Scholar
- Colloca, L., Flaten, M. A., & Meissner, K. (2013). Placebo and pain. From Bench to Bedside. Academic Press.Google Scholar
- Epley, N., Waytz, A., & Cacioppo, J.T. (2007). On seeing human: A three-factor theory of anthropomorphism. Psychological Review, 114(4), 864–886.Google Scholar
- Feldner, M. T., & Hekmat, H. (2001). Perceived control over anxiety-related events as a predictor of pain behaviors in a cold pressor task. Journal of Behavior Therapy and Experimental Psychiatry., 2001(32), 191–202.Google Scholar
- Harrington, A. (1997). The placebo effect: An interdisciplinary exploration. Cambridge: Harvard University Press.Google Scholar
- Jackson, T., Iezzi, T., Nagasaka, T., Fritch, A., & Gunderson, J. (2002). Does the mere presence of over-the-counter pain medication affect pain perception? Some preliminary findings. Psychology, Health & Medicine, 7(2), 215–222.Google Scholar
- Kahneman, D., Knetsch, J. L., & Thaler, R. H. (1990). Experimental tests of the endowment effect and the Coase theorem. Journal of Political Economy, 98, 1325–1347.Google Scholar
- Kirsch, I. (1985). Response expectancy as a determinant of experience and behavior. American Psychologist, 40(11), 1189.Google Scholar
- Kirsch, I. (1997). Response expectancy theory and application: A decennial review. Applied and Preventive Psychology, 6(2), 69–79.Google Scholar
- Kotov, R., Bellman, S., & Watson, D. (2004). Multidimensional Iowa suggestibility scale (MISS). Stony Brook University.Google Scholar
- Kramer, T., & Block, L. G. (2014). Like Mike: Ability contagion through touched objects increases confidence and improves performance. Organizational Behavior and Human Decision Processes, 124(2), 215–228.Google Scholar
- Lai, J. C., Cheung, H., Lee, W. M., & Yu, H. (1998). The utility of the revised Life Orientation test to measure optimism among Hong Kong Chinese. International Journal of Psychology, 33(1), 45–56.Google Scholar
- Lyby, P. S., Aslaksen, P. M., & Flaten, M. A. (2011). Variability in placebo analgesia and the role of fear of pain—An ERP study. PAIN®, 152(10), 2405–2412.Google Scholar
- Lyby, P. S., Forsberg, J. T., Åsli, O., & Flaten, M. A. (2012). Induced fear reduces the effectiveness of a placebo intervention on pain. PAIN®, 153(5), 1114–1121.Google Scholar
- Nemeroff, C., & Rozin, P. (1994). The contagion concept in adult thinking in the United States: Transmission of germs and of interpersonal influence. Ethos, 22(2), 158–186.Google Scholar
- Nesselroade, K. P., Beggan, J. K., & Allison, S. T. (1999). Possession enhancement in an interpersonal context: An extension of the mere ownership effect. Psychology and Marketing, 16(1), 21–34.Google Scholar
- Peck, J., & Shu, S. B. (2009). The effect of mere touch on perceived ownership. Journal of Consumer, 36(3), 434–447.Google Scholar
- Rose, J. P., Geers, A. L., Fowler, S. L., & Rasinski, H. M. (2014). Choice-making, expectations, and treatment positivity: How and when choosing shapes aversive experiences. Journal of Behavioral Decision Making, 27, 1–10.Google Scholar
- Rozin, P., Millman, L., & Nemeroff, C. (1986). Operation of the laws of sympathetic magic in disgust and other domains. Journal of Personality and Social Psychology, 50(4), 703.Google Scholar
- Spielberger, C., Gorsuch, R., Lushene, R., Vagg, P., & Jacobs, G. (1983). Manual for the state-trait anxiety inventory. Palo Alto: Consulting Psychologists Press.Google Scholar
- Ye, Y., & Gawronski, B. (2016). When possessions become part of the self: Ownership and implicit self-object linking. Journal of Experimental Social Psychology, 64, 72–87.Google Scholar