Delphi method

A judgmental method of forecasting that avoids the problem of weighting individual expert forecast while eliminating rank and personality bias. Experts are asked their judgments; the researcher summarizes the expert’s opinions and returns the summary to each expert who is asked to make another forecast now that he/she has received a summary of other expert’s thoughts. The process is repeated until either a consensus is reached or as much convergence as seems likely has been attained.