Computer-mediated communication, de-individuation and group decision-making
International Journal of Man-Machine Studies - Computer-supported cooperative work and groupware. Part 1
Promoting consensus in small decision making groups
Information and Management
Voting before Discussing: Computer Voting as Social Communication
HICSS '99 Proceedings of the Thirty-Second Annual Hawaii International Conference on System Sciences-Volume 1 - Volume 1
Generating group agreement in cooperative computer-mediated groups: towards an integrative model of group interaction
An assessment of group support systems experimental research: methodology and results
Journal of Management Information Systems - Special issue: GSS insights: a look back at the lab, a look forward from the field
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Cross-layer cooperation between membership estimation and routing
Proceedings of the 2009 ACM symposium on Applied Computing
Journal of Management Information Systems
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Agreement is an important concept in group interaction, both for computer-mediated and face-to-face groups. This paper presents a measure of disagreement, D, for groups facing limited-choice problems, based on the average pair-wise separations between group member responses. It allows a meaningful disagreement value to be assigned to any group response pattern. The same logic also provides an individual level measure, d, giving the disagreement of individuals within the group.The properties of this measure are explored and found to be similar to those expected of a measure of disagreement. For nominal data, such as produced by questionnaire responses, D offers a standard scale of disagreement from 0 to 1 for any size group facing any number of mutually exclusive choices. The measures can be inverted to show agreement, although this does not necessarily predict group coalescence, as polarized groups can also contain considerable agreement.The measure can be extended to ranked, interval, and ratio-scale solution choices. In this case, D is equal to twice the variance of the solution scores. The existence of an equivalent measure of ecological diversity further suggests the possibility of a generalized concept of dispersion. An example application is given, illustrating how disagreement at both the individual and group levels can be meaningfully and usefully represented by d and D.