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Cognitive, Affective, & Behavioral Neuroscience

, Volume 19, Issue 1, pp 187–196 | Cite as

What you give is what you get: Payment of one randomly selected trial induces risk-aversion and decreases brain responses to monetary feedback

  • Barbara SchmidtEmail author
  • Luisa Keßler
  • Holger Hecht
  • Johannes Hewig
  • Clay B. Holroyd
  • Wolfgang H. R. Miltner
Article

Abstract

In economic studies, it is standard practice to pay out the reward of only one randomly selected trial (pay-one) instead of the total reward accumulated across trials (pay-all), assuming that both methods are equivalent. We tested this assumption by recording electrophysiological activity to reward feedback from participants engaged in a decision-making task under both a pay-one and a pay-all condition. We show that participants are approximately 12% more risk averse in the pay-one condition than in the pay-all condition. Furthermore, we observed that the electrophysiological response to monetary rewards, the reward positivity, is significantly reduced in the pay-one condition relative to the pay-all condition. The difference of brain responses is associated with the difference in risky behavior across conditions. We concluded that the two payment methods lead to significantly different results and are therefore not equivalent.

Keywords

Economic research Risk behavior Payment method Reward positivity 

Notes

Acknowledgements

The authors thank Natalie Gittner, Tabitha Mantey, Sophie-Marie Rostalski, and Cerstin Seyboldt for help with data acquisition.

Author contributions

B. Schmidt developed the study concept. All authors contributed to the study design. Testing and data collection were performed by L. Keßler and H. Hecht. B. Schmidt performed the data analysis and interpretation under the supervision of C. B. Holroyd. B. Schmidt drafted the manuscript, and C. B. Holroyd, J. Hewig, and W. H. R. Miltner provided critical revisions. All authors approved the final version of the manuscript for submission.

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Copyright information

© Psychonomic Society, Inc. 2018

Authors and Affiliations

  • Barbara Schmidt
    • 1
    Email author
  • Luisa Keßler
    • 1
  • Holger Hecht
    • 1
  • Johannes Hewig
    • 2
  • Clay B. Holroyd
    • 3
  • Wolfgang H. R. Miltner
    • 1
  1. 1.Institute of PsychologyFriedrich Schiller University of JenaJenaGermany
  2. 2.Institute of PsychologyJulius Maximilians University of WürzburgWürzburgGermany
  3. 3.Department of PsychologyUniversity of VictoriaVictoriaCanada

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