“…There is a long history of researching the impact of shared information in group activities. For example, social psychologists have looked at the kind of information in communication that influences people's change of attitudes (Barnard, Mason, & Ceynar, ; Petty & Wegener, ). These studies have shown that the shared information that is plausible and logical, and adds new insight to the issue, is more likely to cause attitude change (Leippe & Elkin, ; Petty & Cacioppo, ).…”
Prior studies have shown that articulating and sharing rationales in traditional small-group activities contribute to the maintenance of common ground, members' knowledge awareness, and contribution awareness. It is likely that the importance of articulating and sharing rationales will be increasingly acknowledged in online crowdsourcing because in such a context, large-scale participation is expected with participants often not knowing each other and being flexible about their participation status (e.g., participants may join after the activity has started and leave before it completes), and thus more grounding efforts/support are expected. To better understand the role of shared rationales in online crowdsourcing, three experiments were conducted investigating whether and how rationale awareness affects the ideation crowdsourcing task and ideaevaluation crowdsourcing task based on the findings about the rationale awareness effects in small-group idea-generation activities. The results suggest that one's awareness of previous workers' rationales in the current task can slightly improve the average quality of generated ideas in an iterative approach. In addition, one's evaluation of an idea could be positively or negatively affected by the idea's rationale depending on the quality of the rationales. The results also suggest that showing previous workers' rationales in the ideation task may not be an effective approach for improving the best quality of generated ideas.
“…There is a long history of researching the impact of shared information in group activities. For example, social psychologists have looked at the kind of information in communication that influences people's change of attitudes (Barnard, Mason, & Ceynar, ; Petty & Wegener, ). These studies have shown that the shared information that is plausible and logical, and adds new insight to the issue, is more likely to cause attitude change (Leippe & Elkin, ; Petty & Cacioppo, ).…”
Prior studies have shown that articulating and sharing rationales in traditional small-group activities contribute to the maintenance of common ground, members' knowledge awareness, and contribution awareness. It is likely that the importance of articulating and sharing rationales will be increasingly acknowledged in online crowdsourcing because in such a context, large-scale participation is expected with participants often not knowing each other and being flexible about their participation status (e.g., participants may join after the activity has started and leave before it completes), and thus more grounding efforts/support are expected. To better understand the role of shared rationales in online crowdsourcing, three experiments were conducted investigating whether and how rationale awareness affects the ideation crowdsourcing task and ideaevaluation crowdsourcing task based on the findings about the rationale awareness effects in small-group idea-generation activities. The results suggest that one's awareness of previous workers' rationales in the current task can slightly improve the average quality of generated ideas in an iterative approach. In addition, one's evaluation of an idea could be positively or negatively affected by the idea's rationale depending on the quality of the rationales. The results also suggest that showing previous workers' rationales in the ideation task may not be an effective approach for improving the best quality of generated ideas.
“…In our research, we define the change rationale as the information that provides justification of the change decision. Social psychologists have investigated the kinds of information in communication that influences people's attitudes (Barnard, Mason, & Ceynar, 1993;. These studies showed that the shared information that is plausible and logical and adds new to the issue is more likely to cause attitude change (Petty & Cacioppo, 1984;Leippe & Elkin, 1987).…”
Section: Database and Its Design Rationalementioning
Changes are inevitable in project management and project managers are often required to make change decisions that may have significant effects on the success of the project. To support project managers' decision-making process in such common cases, we have designed and developed a tool called ProjectTales. This tool takes advantage of the valuable information buried in the history of projects and provides various visual and interactive representations of the previous changes. Using ProjectTales, project managers can explore the history of projects, find the change situations similar to their current one, interpret the impact of the change decision, and potentially reuse the decision and the rationale of the change. We are currently planning a user evaluation to compare our tool with a baseline system.
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