Decomposed versus holistic estimates of effort required for software writing tasks

Article Abstract:

The central 'decomposition principle' of decision analysis is examined in the context of work-time estimates of software writers. Two experiments are performed to investigate the abilities of advanced programming students to estimate the time needed to complete particular software projects. They predicted work times for entire projects and for subtasks. The observed overtightness is found to be unaffected by task decomposition, question order, question wording or training in estimation. However, a procedure that induces significantly optimistic upper and lower plausible limits is found to be capable of reducing overtightness. Results indicate that the best level of decomposition to educe work-time estimates depends on task, judge and elicitation method.

Decision-making, Decision making, Product development

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Effects of anonymity and evaluative tone on idea generation in computer-mediated groups

Article Abstract:

The generation of ideas by groups was researched by a laboratory experiment focusing on participants' anonymity and the groups' evaluative tone in the creative process. Computer-mediated groups made up of anonymous members including a critical associate, which used group decision support systems to solve problems requiring idea generation produced the largest number of original ideas and comments, but average idea quality uniqueness were not different across conditions. Groups made up of identified members and a supportive associate were most satisfied and had the greatest level of perceived effectiveness, yet produced the lowest number of original ideas and comments.

Decision-making, Group, Group decision making, Group problem solving

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Information technology for negotiating groups: generating options for mutual gain

Article Abstract:

Emerging technologies offer a wider selection of approaches that can be used in the successful generation of options for the mutual gain of negotiating groups. Past research on the different aspects of computer-based generation of options for groups are reviewed and expanded. Available theories of communication, minority influence, and human information processing can provide further theoretical basis for researches on group decision support systems.

Usage, Information technology, Technology application, Negotiation, Negotiations, Conflict management

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