Structuring time and task in electronic brainstorming

There are many ways in which a GSS can be used to support group brainstormi ng. This paper reports the results of an experiment that manipulated task s tructure and time structure. Groups electronically brainstormed on intact t asks (where all parts of the task were presented simultaneously) or on part itioned tasks (where three subcategories of the task were presented to the groups). The time periods in which groups worked were either one 30-minute lime period or three 10-minute periods separated by two-minute breaks. Grou ps in the partitioned task treatment generated 40% more ideas, but there we re no time effects. These differences are attributed to the ability of the partitioned task to refocus members' attention more evenly across the entir e solution space.