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thinking, domineering, communication apprehension,
getting off-the-track, and social rank related issues are common problems.
Concerning
technology, the audio or even video recording of the session is quite usual and routine. The latter is needed in case it is important to know afterwards who said what. In traditional settings, it is possible to present handheld prototypes or models. The travelling, venue, and transcribing
costs are high. Traditional focus groups can accommodate the lowest number of participants due to serial communication mode, thus more groups with relatively homogeneous participants are needed (see Table 3 fora summary).
Table 3Benefits and drawbacks of traditional focus groups
Benefits Drawbacks+
Richer media, researchers may observe
− High travelling costs (participants nonverbal communication, and moderators)
such as body language, facial expressions, tones of voice etc+ Moderator’s task is easier than with
− High rental costs venue computer-mediated
communications(especially those indifferent- place settings+ Participants may feel more satisfied
− High transcribing costs and long with a verbal/social process delay in reporting
(especially older people+ The process usually stays focused
− Limited time to speak per person without any external distractions
(e.g. with ten participants 6 min/
(and if they happen, the facilitator person in 1 h)
can respond immediately+ FTF discussion
is a familiar form of − Possible dominance of some persons communication to the participants+ Participants don’t have to have typing
− Group thinking (pressure to conform) and skills (e.g. children, old people) communication apprehension (e.g. with sensitive issues) may occur+ Possibility to utilize 3D-models, proto-
− Comments and ideas evaluated types, highly confidential material etc. based on the presenter, not the idea itself+ Smaller probability for technical
− Max. 12 participants per group problems (audio and video recording technologies needed in FTF sessions are more mature than computer-mediated communication
technologies The more people, the more process losses due to the serial communication mode The discussion might easily get offtrack thus the moderator must be determined and knowledgeable about how to guide the group dynamics Moderator must have excellent social skills Requires homogeneity between participants, and thus often several groups Need for videotaping if vital to know who said what
4 The Focus Group Method as an Empirical Tool in Software Engineering
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