 Additionally, it is not normed, lacks the "Specialist" role and the benefit of feedback from colleagues, and does not offer Team Role feedback.Much early research is based upon this now obsolete version of the inventory.In the initial research, eight team-role behavioural styles were identified -- "Chairman, Shaper, Plant, Monitor-Evaluator, Company Worker, Resource Investigator, Team Worker", and "Completer-Finisher".