1. Department of Psychology, School of Philosophy, Psychology and Language Sciences The University of Edinburgh Edinburgh United Kingdom
2. Wildlife Research Center Kyoto University Kyoto Japan
3. Scottish Primate Research Group United Kingdom
4. Department of Comparative Cognition, Institute of Biology University of Neuchatel Neuchatel Switzerland
5. Distributional Linguistics Lab, Department of Comparative Language Science University of Zurich Zürich Switzerland
6. Department of Comparative Medicine The University of Texas M D Anderson Cancer Center Bastrop Texas USA