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Related to Delphi technique: Nominal group technique
Collection of independent opinions without group discussion by the analysts providing the opinions; used for various sorts of evaluations (such as country risk assessment).
A system of forecasting in which different experts give their professional opinions without knowing what the other experts' opinions are. That is, the experts share their opinions anonymously and discuss them in a series of rounds. These rounds continue until they reach some consensus. The Delphi technique exists to ensure that a famous or well-regarded expert's opinion does not drown out those of lesser known analysts.