Collaborative brainstorming is often followed by a convergence activity where teams extract the most promising ideas on a useful level of detail from the brainstorming results. Contrary to the wealth of research on electronic brainstorming, there is a dearth of research on convergence. We used experimental methods for an in-depth exploration of two facilitation-based interventions in a convergence activity: attention guidance (focusing participants on procedures to execute a convergence task) and discussion encouragement (engaging participants in conversations to combine knowledge on ideas). Our findings show that both attention guidance and discussion encouragement are correlated with higher convergence quality. We argue that attention guidance's contribution is in its support of coordination, information processing, and goal specification. Similar, we argue that discussion encouragement's contribution is in its stimulation of idea clarification and idea combination. Contrary to past research, our findings further show that satisfaction was higher after convergence than after brainstorming.KEY WORDS AND PHRASES: attention guidance, brainstorming, collaboration, collaborative brainstorming, discussion encouragement, idea convergence, idea quality, idea selection, ideation, satisfaction, team, teamwork.Increased market competition, fast technological developments, and the dynamic environment in which organizations function set increasingly challenging requirements on an organization's ability to solve problems and make decisions. To address such challenges, organizations rely on the collaborative development of ideas, in both small teams and large crowds [39,45]. Since the 1950s, a vast body of literature has developed on brainstorming or ideation, spanning different disciplines such as psychology, information systems, and management [30,67,76]. This research shows that under a variety of conditions, teams using collaboration technologies and techniques may produce more ideas of higher quality than individuals who do not use such support [30,31,37,76].However, brainstorming by itself is insufficient for organizational value creation. It is an early step in a collaborative idea development process but does not produce a single final solution or decision [42,45]. In fact, most brainstorming techniques and technologies aim to generate high volumes of ideas to increase the likelihood that some promising ideas will be part of the results [15]. There are many examples of high brainstorming productivity: a team of end-user representatives working with information systems (IS) professionals can generate hundreds of user stories in a matter of hours [26]. A team of military decision makers can identify dozens of possible courses of action in response to an external event or threat [12]. Emergency 940 SEEBER, MAIER, DE VREEDE, AND WEBER response workers can easily collect hundreds of ideas to bring relief to areas that have been struck by natural disaster [84]. Brainstorming productivity gets even more pronounced...