Several, almost parallel, developments have taken place in a variety of related fields which have significant impact on the proposed task. The acquisition and synthesis of interactive human behaviour is motivated by multiple developments in the fields of artificial perception, machine learning, artificial life, and other areas. In fact, Action-Reaction Learning involves an interesting marriage of multi-disciplinary approaches from perception, learning, synthesis and cognitive science. Some particular examples of related work are discussed here but will also be referred to again throughout this document when they need to be called upon. It is of course impossible to cite all the relevant work in the related disciplines so the following will be a sampling of some important ideas.