In: Lola Cañamero; Pierre-Yves Oudeyer; Christian Balkenius (Hrsg.). Proceedings of the 9th International Conference on Epigenetic Robotics. International Conference on Epigenetic Robotics (EpiRob-09), Modeling Cognitive Development in Robotic Systems, November 12-14, Venice, Italy, Pages 235-236, Lund University Cognitive Studies, No. 146, ISBN 978-91-977-380-7-1, 11/2009.