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Dr Tomás Lejarraga
Tenure-track contract Lecturer with a PhD
Business Organization
  • Despatx DB122Primer pisGaspar Melchor de Jovellanos

    Dr Tomás Lejarraga


    Brief CV

    Tomás is the Director of the UIB Decision Science Laboratory. He received his doctorate in Universitat Pompeu Fabra (Spain) in 2009. He was a Postdoctoral Fellow at the Dynamic Decision Making Laboratory in Carnegie Mellon University (USA), and later a Visiting Associate Professor at the Universitat de les Illes Balears (Spain). From 2013 to 2016, Tomás was a Research Scientist at the Center for Adaptive Rationality in the Max Planck Institute for Human Development in Berlin (Germany). He is interested in how individuals and groups explore, process, and integrate descriptive (symbolic information) and personally experienced information when making decisions. His most recent publications are:

    Lejarraga, T., Schulte-Mecklenbeck, M., Pachur, T., & Hertwig, R. (2019). The Attention-Aversion Gap: How Allocation of Attention Relates to Loss Aversion, Evolution and Human Behavior, in press

    Lejarraga, T., Frey, R., Schnitzlein, D., & Hertwig, T. (2019). No Effect of Birth Order on Adult Risk Taking, Proceedings of the National Academy of Sciences, 116(13), 6019-6024.

    Lejarraga, T., Woike, J. K., & Hertwig, R. (2019). Experiences and Descriptions of Financial Uncertainty. Are They Equivalent? In R. Hertwig, T. J. Pleskac, T. Pachur, & The Center for Adaptive Rationality, Taming uncertainty. Cambridge, MA: MIT Press.

    Hertwig, R., Pleskac, T. J., Pachur, T., & ARC Research Group (2019). Taming Uncertainty. MIT Press.

    More information


    Office Hours

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    Teaching, 5 previous years

    Subject Degree
    11320 - Business Organization and Strategy
    • Master's in Agronomic Engineering2016-17
    • Master's in Industrial Engineering2016-17
    11322 - Human Resource Management
    • Master's in Industrial Engineering2016-17
    20505 - Organisational Design and Human Resources
    20531 - Final Degree Project


    Research groups

    Group Membership type
    Decision Science Main researcher
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