1. Tilburg University,Department of Cognitive Science and Artificial Intelligence,Tilburg,Netherlands
2. Humboldt-Universität zu Berlin,Adaptive Systems Group,Department of Computer Science,Berlin,Germany
3. Institute for Open and Transdisci-plinary, Research Initiatives, Osaka University,Symbiotic Intelligent Systems Research Center,Japan
4. Humboldt-Universität zu Berlin,Department of Psychol-ogy,Berlin,Germany