 The (National Institute for Educational Research) in France, in case studies of Wikipedia, reported that while it was difficult to measure the influence of the groups as of April 2006, their existence is indicative of Wikipedia's internal dynamics consisting of multiple identities, and may play progressively increasing roles.Deletion debates over an article on Enterprise 2.0 sparked a study by the Harvard Business School.In the "Journal of the Association for Information Science and Technology", a study of Wikipedia's social dynamics called inclusionism and deletionism the two most prominent associations within Wikipedia.