Chrystopher L. Nehaniv is Research Professor of Mathematical and Evolutionary Computer Sciences in the School of Computer Science at the University of Hertfordshire, where he works with the Adaptive Systems, Algorithms and BioComputation Research Groups. He is the Director of the UK EPSRC Network on Evolvability in Biological and Software Systems and an Associate Editor of BioSystems: Journal of Biological and Information Processing Sciences and Interaction Studies: Social Behaviour and Communication in Biological and Artificial Systems. Kerstin Dautenhahn is Research Professor of Artificial Intelligence in the School of Computer Science at the University of Hertfordshire, where she is a coordinator of the Adaptive Systems Research Group. Her research interests include social learning, human-robot interaction, social robotics, narrative and robotic assisted therapy for children with autism. She is the Editor-in-Chief of Interaction Studies: Social Behaviour and Communication in Biological and Artificial Systems and the general chair of the IEEE International Symposium on Robot and Human Interactive Communication (RO-MAN 2006).