Proceeding of: Adaptive Learning Agents and Multi-Agent Systems, ALAMAS+ALAg 2008 – Workshop at AAMAS 2008, Estoril, May, 12, 2008, Portugal.Accurately testing for consciousness is still an unsolved problem when applied to humans and other mammals. The inherent subjective nature of conscious experience makes it virtually unreachable to classic empirical approaches. Therefore, alternative strategies based on behavior analysis and neurobiological studies are being developed in order to determine the level of consciousness of biological organisms. However, these methods cannot be directly applied to artificial systems. In this paper we propose both a taxonomy and some functional criteria that can be used to assess the level of consciousness of...