In order to conduct a Real-Time Delphi study, computer software – usually web-based – is needed for facilitating real-time calculations and visualisation of results. It is generally proposed in the existing literature that the experts participating in the study see not only their own answers but also the median and interquartile range of all given responses immediately after answering a quantitative question. Besides the quantitative assessment a qualitative judgment of participants can be shown which serves as a justification for their numerical assessment of the question. Additionally, it can be shown to the expert how many respondents have already given their answers. To examine the qualitative arguments of others participants can click on a button, and a "reasons window" opens, which shows the statements of other participants to underline their point of view. So, the respective legitimisations given by others may cause a respondent to recapture his own point of view. In the next step the expert can change his own answer, add new arguments to underline his point of view, or leave his answer unchanged. In addition, the respondent will be shown an attention indicator, a so-called "flag", if his answer is within or outside the interquartile range or significantly different from the median. This application helps to see and understand immediately the own assessment and to think about reasons for the deviation from group opinions or else a high degree of consent. The respondent's attention will be called by highlighting questions with a high degree of deviation with a different colour and by asking him to give further reasons for his deviation from the group opinion.
