Simply Rational is a spin-off of the Max Planck Institute for Human Development

Simply Rational: Consulting + Training. We support organizations to measurably improve decisions. To this end, we use Nobel Prize-winning findings from behavioral research and organizational development as well as state-of-the-art methods from artificial intelligence. Our clients  directly benefit from the latest cutting-edge research: Simply Rational is a spin-off of the Max-Planck-Institute for Human Development, Berlin— co-founder Prof. Gerd Gigerenzer is one of the world’s most renowned psychologists.

Our Team

We are an interdisciplinary team of scientists and practitioners.

Gerd Gigerenzer

Prof. Dr.

Florian Artinger

Prof. Dr.

Our Research

As a decision-making institute, we use research to ensure the best advice for our customers. At the same time, we conduct research with out clients to generate cutting-edge science. A selection is available below:

  • Artigner, F., Artinger, S., & Gigerenzer (2019). C.Y.A.: frequency and causes of defensive decisions in public administration. Journal of Business Research, 12:9–25
  • Artinger & Petersen ergänzen: Artinger, F. M., Petersen, M., Gigerenzer, G., & Weibler, J. (2015). Heuristics as adaptive decision strategies in management. Journal of Organizational Behavior, 36(S1), S33–S52.
  • Keller, N. & Jenny, M.A. (2020). How to Determine When SARS-CoV-2 Antibody Testing Is or Is Not Useful for Population Screening – A Tutorial. MDM Policy & Practice; 5(2):2381468320963068. Doi:10.1177/2381468320963068.
  • Keller, N., and Katsikopoulos, K. V. (2016). On the role of psychological heuristics in operational research; and a demonstration in military stability operations, European Journal of Operational Research, 249, 1063-1073.
  • Keller N, Jenny MA, Spies CA, Herzog SM. Augmenting Decision Competence in Healthcare Using AI-based Cognitive Models. 2020 IEEE International Conference on Healthcare Informatics (ICHI),
  • Gigerenzer, G., Gaissmaier, W., Kurz-Milcke, E., Schwartz, L. M., & Woloshin, S. (2007). Helping doctors and patients to make sense of health statistics. Psychological Science in the Public Interest, 8, 53–96.
  • Luan, S., Reb, J., & Gigerenzer, G. (2019). Ecological rationality: Fast-and-frugal heuristics for managerial decision making under uncertainty. Academy of Management Journal62(6), 1735–1759.
  • Katsikopoulos, K. V., Șimșek, Ö., Buckmann, M., & Gigerenzer, G. (2020). Classification in the wild: The science and art of transparent decision making. MIT Press.
  • Gigerenzer, G. (2015). Simply rational: Decision making in the real world. Oxford University Press.
  • Bauer, T. K., Gigerenzer, G., & Krämer, W. (2014). Warum dick nicht doof macht und Genmais nicht tötet: Über Risiken und Nebenwirkungen der Unstatistik. Campus Verlag. (e-book:
  • Gigerenzer, G. (2014). Risk savvy: How to make good decisions. Viking. (German translation: Risiko: Wie man die richtigen Entscheidungen trifft. Bertelsmann, 2013)
  • Gigerenzer, G., & Gaissmaier, W. (2012). Intuition und Führung: Wie gute Entscheidungen entstehen. Bertelsmann-Stiftung.

You can find more publications by Prof. Dr. Gerd Gigerenzer finden Sie hier.
You can find more publications by Prof. Dr. Florian Artinger finden Sie hier.
You can find more publications by Dr. Maria Douneva finden Sie hier.

Our Partners

Max-Planck Institut for Human Development

The Max Planck Institutes are Germany’s international scientific lighthouses. They conduct research on par with Harvard and Oxford. At the Max Planck Institute for Human Development, everything revolves around decisions, human development, and educational processes. Scientists from different disciplines – such as psychology, computer and information science or economics – work together on interdisciplinary projects.

University Hospital Berlin

The Charité is one of the largest hospitals in Europe. Here, doctors and scientists research, heal and teach on a top-tier international level. More than half of the German Nobel Prize winners in medicine and physiology come from the Charité. Charité – Universitätsmedizin Berlin is the joint medical faculty of Freie Universität Berlin and Humboldt – Universität zu Berlin.

Harding Center for Risk Literacy

The Harding Center at the University of Potsdam studies how people behave in risky situations and how they can make competent decisions in the process.

Dark Horse

Innovation management is uncertainty management. Thus, it only makes sense that Dark Horse, one of Germany’s most successful innovation agencies, and Simply Rational, the leading experts in dealing with uncertainty, join forces. You can find our solutions for how to manage uncertainty in innovation effectively and sustainably here.

German Institute for Compliance (DICO)

Even if compliance guidelines are derived from laws, the prevention of compliance violations is essentially a behavioral science task and not a legal one. Compliance management systems must be designed in a way that they support employees in their daily decision-making. We work with DICO, the experts in compliance, and other renowned compliance researchers to develop methods that can anticipate and effectively prevent compliance breaches.

German Credit Management Association (BvCM)

Credit management works with large amounts of data. We implement modern AI systems to make better decisions and at the same time continue to effectively incorporate humans in the decision-making process.


“Analysieren Sie Ihr Vermögen – einfach und intelligent.” Unsere Mission mit unserem Schweizer Partner Finhorizon ist es, Menschen zu befähigen, Risiken von Finanzanlagen einfach zu verstehen. Dies ermöglichen wir durch intuitive Visualisierungen der Risikoprofile von Finanzinstrumenten. Somit reduzieren wir radikal die Komplexität und ermöglichen Lai:innen und Expert:innen intelligente Finanzentscheidungen zu treffen.


Inspire2Live, a cancer patient association, brings together researchers and clinicians to tackle cancer on an international scale. We help Inspire2Live to communicate medical information and evidence on cancer in a way that is understandable and clear for those affected – with a focus on the areas of early detection and prevention.

Job Vacancies

Ongoing interns (m/f/d) wanted. German language is required. Further Information see below: