Welphi is an online survey platform that implements the Delphi method.
This platform allows you to create questionnaires for acquiring opinion of several
participants, geographically disperse and/or with a busy agenda, in an easy and affordable
Through a system of rounds, it is possible, in an anonymous way, to confront each participant
with the opinions of his peers, engaging participants in a non-face-to-face format and
promoting consensus among the group on issues that lack the support of quantitative data.
Thus, the Welphi is positioned between a face-to-face meeting – where the
confrontation of ideas is possible but the physical presence of all participants is
required– and a simple online questionnaire – where the opinion of participants is requested
but not shared with others and no opportunity is given to each participant to revise his
option in light of the opinion of his peers.
Therefore, Welphi permits to confront ideas in an asynchronous, online, participatory
and iterative way. Moreover, by permitting to anonymously share the participants’ comments,
each participant can change his initial position, thus promoting group consensus.
The Welphi platform was developed to facilitate the process of:
To start each round, the platform automatically sends an invitation e-mail to
each participant, with all the information required for accessing the online
During each round, the Welphi also sends automatic reminders to those participants
who have not completed the questionnaire, thus reducing the drop-out rate of the
One of the main advantages of using Welphi is the production of automatic
statistics for result analysis. Welphi also allows establishing rules for approval and
rejection, permitting, on one hand, to elect consensual elements and, on the other, to
decide which elements should be included in a new round.
In the end, data can be exported for Excel files for subsequent analysis.
The Delphi method
Delphi is a ‘method for structuring a group communication process so that the
process is effective in allowing a group of individuals, as a whole, to deal with a
complex problem’ (p.3, ) and is based on the assumption that group opinion is
more valid and reliable that individual opinion .
There are four key features that characterize the Delphi
1 | Ensures anonymity avoiding social pressure;
2 | Provides controlled feedback and statistical summary of answers,
enaging participants in a non-face-to-face format;
3 | Each participant can respond in its own pace;
4 | Friendly and attractive interface.
By not making mandatory the physical presence of the members of the group, Delphi
avoids social pressure (as it is an anonymous process) and it allows for a more
efficient use of resources, such as time and money. This is valid for all group
sizes, but is especially relevant considering large groups and/or geographically
Delphi was developed at the RAND Corporation in the 1950s to forecast the impact of
technology on warfare. Since its development, and given its underlying flexibility,
the Delphi method has undergone different modifications and today there are several
types of Delphi methods. This ability to adapt to different real world problems
makes it possible to find examples of Delphi processes on : risk management,
investment analysis, planning health services, policy and trend analysis and
 Linstone, H.A. and M. Turoff, The Delphi method: Techniques and
applications. 2002, Reading: Addison-Wesley.
 Keeney, S., F. Hasson, and H. McKenna, The Delphi technique in
nursing and health research. 2011, Chichester: Wiley Blackwell.
 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.
 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.