Group techniques that may be used during requirement elicitation to understand the requirements are Brainstorming , System protoyping.
System Prototyping
It is an iterative process in which dummy version of the product is launched to obtain user requirements and is refined over and over again according to the user feedback. Prototyping is used for elicitation where the users have no knowledge about their requirements and where early response is required from the stakeholders.
Brainstorming
It is an informal discussion where free expression of ideas is given to every participant for a new kind of system to be developed. The members are from different fields and each member is given a certain time period to share the ideas. This technique focusses on a particular issue and participants come up with new creative ideas related to that within a prescribed time limit. The ideas generated are recorded; inappropriate ones are eliminated and appropriate ones are prioritized. The more the ideas the more is the quality of requirements. The main advantages of using brainstorming is that it encourages innovative ideas and expressions, and it promotes generation of advanced and recent practices to current issues.
