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Postdoctoral Researcher

Dr. Jehan Sparks

Phone +49-221-470-1187
Personal webpage

AddressRichard-Strauss-Str. 2, 50931 Köln, Germany | Room 3.A01
Office hours by appointment

Research interests

Positive and negative information • Valence asymmetries • Framing • Counterfactual thinking • Judgment and decision making • Social cognition


  • Boydstun, A. E., Ledgerwood, A., & Sparks, J. (2019). A negativity bias in reframing shapes political preferences even in partisan contexts. Social Psychological and Personality Science, 10, 53–61.
  • Sparks, J., & Ledgerwood, A. (2017). When good is stickier than bad: Understanding gain/loss asymmetries in sequential framing effects. Journal of Experimental Psychology: General, 146, 1086–1105.
  • Wang, Y. A., Sparks, J., Gonzales, J. E., Hess, Y. D., & Ledgerwood, A. (2017). Using independent covariates in experimental designs: Quantifying the trade-off between power boost and Type I error inflation. Journal of Experimental Social Psychology, 72, 118–124.
  • Ledgerwood, A., Soderberg, C. K., & Sparks, J. (2017). Designing a study to maximize informational value. In J. Plucker & M. Makel (Eds.), Toward a more perfect psychology: Improving trust, accuracy, and transparency in research (pp. 33–58). Washington, DC: American Psychological Association.

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Academic distinctions

  • SPSP Graduate Student Travel Award, 2018
  • UC Davis Summer Research Fellowship, 2017
  • Society for the Improvement of Psychological Science Travel Award, 2016
  • UC Davis Dukes Travel Award, 2015
  • Bill and Melinda Gates Foundation Fellowship, 2015-2016
  • SPSP Student Poster Award Finalist, 2015
  • SPSP Graduate Student Travel Award, 2015
  • Romine Prize, Best Senior Economics Thesis, Columbia University (awarded to 1 of 200 Economics majors), 2010
  • Deans List, Columbia University, 2006-2010

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