2007-StG; Grant Agreement Number 205557).
285
Acknowledgements
We thank the participants and the people who assisted in conducting the experiments. Our
gratitude goes especially to the teachers Catherine Felder, Annette Rentz-Lühning, Jotika
Hermsen and Ariya Ñani. This work was supported by grants from the University of Zurich, the
Swiss National Science Foundation and the European Research Council (Reference No.: ERC-
