The Inventory assesses how an individual behaves in a team environment. It was devised by to measure preference for nine Team Roles he had identified eight of those whilst studying numerous teams. (March 2017) () () The Belbin Team Inventory is a behavioural test, also called the Belbin Self-Perception Inventory, Belbin Team Role Inventory, BSPI or BTRI. It may require to comply with Wikipedia's content policies, particularly. A major contributor to this article appears to have a with its subject.