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The Delphi technique has been used for  meeting several  challenges, including [1, 3, 4]:

  • Establishing objectives
  • Planning for budget allocations
  • Collecting current and historical data
  • Exploring perceptions associated with potential policy options
  • Exploring personal motivations and values
  • Forecasting by exploring what is likely to happen, what may change, and what effects can be anticipated

Delphi has been applied in a large number of domains [3] including business, economics, finance, health care, sales and strategic planning.

Real-life cases where Welphi has been used for:

  • Building a composite index to measure population health on the European regions. Welphi was used in three distinct Delphi processes: (1) for selecting indicators, (2) for defining the shapes of the indicators’ value functions and (3) for weighting the indicators.
  • Selecting the objectives of the Social Development Plan (2016-2019) of the municipality of Lisbon, Portugal.


1. Linstone, H.A. and M. Turoff, The Delphi method: Techniques and applications. 2002, Reading: Addison-Wesley.

2. Keeney, S., F. Hasson, and H. McKenna, The Delphi technique in nursing and health research. 2011, Chichester: Wiley Blackwell.

3. Gupta, U.G. and R.E. Clarke, Theory and applications of the Delphi technique: A bibliography (1975–1994). Technological forecasting and social change, 1996. 53(2): 185-211.

4. Warner, L.A., Using the Delphi Technique to Achieve Consensus: A Tool for Guiding Extension Programs. 2014, Agricultural Education and Communication Department, UF/IFAS Extension.