ABSTRACT
D. C. Berry & D. E. Broadbent showed that the accuracy of an individual's control over a complex system is not necessarily related to explicit knowledge of the system. Implicit knowledge may be effective for individuals, but it could be a hindrance for groups who must discuss explicitly. Therefore the training procedure was manipulated to compare implicit and explicit knowledge. Groups in the explicit condition gave a reason for their choice; groups in the implicit condition said nothing, following Berry & Broadbent's manipulation. Ecosystems in the shared condition used the same predator-prey relationship for all animals so both group members could make accurate judgements about the entire ecosystem. In the distributed condition there were two types of animal. Each group member was trained on one, so they could only make accurate predictions about half of the ecosystem.
