Distributed Idea Generation Outperforms Team Brainstorming
"This has significant managerial implications: if the interactive build-up [of team brainstorming] is not leading to better ideas, an organization might be better off relying on asynchronous idea generation by individuals using, for example, web-based idea management systems."
That quote is from a report by three researchers from the INSEAD and Wharton business schools. They published a study, "Idea Generation and the Quality of the Best Idea", that analyzes a mainstay of corporate life: the brainstorming session.Is it effective in generating quality ideas?
To find out, the researchers conducted a field experiment in which they compared two models of generating ideas:
- Team structure: Group works together at the same time together in a room to generate ideas.
- Hybrid structure: Individuals generate their ideas independently, then meet together in a group.
Their objective was to determine which of those two structures generated more ideas, ideas of higher quality and is better able to discern the quality of ideas. They found in all cases that the hybrid structure outperformed the team structure.
Extreme Value Theory
The success of idea generation in innovation usually depends on the quality of the best opportunity identified. For most innovation challenges, an organization would prefer 99 bad ideas and 1 outstanding idea to 100 merely good ideas. In the world of innovation, the extremes are what matter, not the average or the norm.
The researchers - Karan Girotra, Christian Terwiesch, Karl T. Ulrich - were interested in determining what methods generate the best ideas. They distinguish their approach from previous research which analyzed the quantity or average quality of ideas generated.
They use extreme value theory to understand the factors impacting the quality of ideas. Extreme value theory shows that the maximum value of an idea from a set of ideas is based on:
- The sheer volume of ideas generated
- Average quality of all ideas generated
- The level of variance in the quality of generated ideas
These concepts are put together nicely in this graphic:

Once you understand this framework for innovation, it becomes a matter of maximizing the values for each component. Watching, of course, for correlative impacts between them.
Field Research Experiment
The three researchers conducted an exhaustive experiment to determine which of the two methods - team structure or hybrid structure - generated the highest quality ideas at the top end of the scale. Here is the summary of their experiment.
Subjects: 44 juniors, seniors and grad students at the University of Pennsylvania
Challenges: They generated 443 ideas around two challenges.
- You have been retained by a manufacturer of sports and fitness products to identify new product concepts for the student market. The manufacturer is interested in any product that might be sold to students in a sporting goods retailer.
- You have been retained by a manufacturer of dorm and apartment products to identify new product concepts for the student market. The manufacturer is interested in any product that might be sold to students in a home-products retailer.
Idea generation formats: Subjects were split into four clusters. Half the clusters did the team structure first, half did the hybrid structure first. The clusters then switched structures for the different ideation challenges.
Idea quality: The quality of the ideas was assessed in two ways.
- Business value: Panel of 41 Wharton MBA students each assessed the business value of the ideas on a 1 - 10 scale
- Purchase intent: Panel of 88 college students (the target market for the ideas) each assessed their own likelihood of buying a given product proposal on a 1-10 scale
Experiment format: Subjects conducted idea generation exercises as follows.
- Team structure: 30 minutes together in a room to generate ideas together. Then 5 minutes of assessing and selecting the best 5 ideas.
- Hybrid structure: 10 minutes of generating ideas on their own. Then 20 minutes of discussing these and new ideas. Finally, 5 minutes of assessing and selecting the best 5 ideas.
Results: Hybrid Structure Tops Team Brainstorming
The results of the experiment are eye-opening. The researchers analyzed the two approaches on the three components of extreme value theory. They find hybrid is better on the individual components of the theory, and in the ultimate test: quality of the top ideas produced.
Number of ideas generated. Hybrid structure generates three times more ideas than does the team structure. Researchers attribute this result to three dynamics:
- Free riding: it's easy enough to ride the idea coattails of the group
- Evaluation apprehension: the fear of negative reaction when proposing an idea in front of a group
- Production blocking: participants have to wait while one person is speaking, limiting idea generation throughput
Idea quality: The average quality of the hybrid structure ideas was higher than that of the team structure. Specifically, 0.25 points better in business value, 0.35 points better in purchase intent. To put this in perspective, these differences translate into roughly a 30 point differential in percentile rankings. In other words, the difference between the 1st and 30th idea in a pool of 100 ideas.
Researchers attribute the decrease in idea quality for team structures to the same free riding dynamic that reduces the quantity of ideas.
Idea quality variance: The researchers found no discernible difference in idea quality variance between the hybrid and team structures.
What this means is that from extreme value theory, the quantity and average quality of ideas are the key drivers of generating the highest-ranked ideas.
Best ideas: Here's where the rubber meets the road. Which approach had the highest ranked ideas? Hybrid structure, by a landslide.
The researchers looked at the top 5 ideas, by quality scores, that emerged from the two approaches. The hybrid structure ideas were of much higher quality than those generated from the team structure. This finding held for looking at the top 3, 4 and 6 ideas as well.
To recap:
The hybrid structure produced:
- More ideas
- Ideas of better quality on average
- Highest rated ideas
Ability to Select Best Ideas
Perhaps the one down note from the study is the ability of the group to select the best ideas. Remember that in both the team and hybrid structures, the group did a consensus selection of the top ideas. Participants weren't asked to select the top ideas individually.
The researchers found a small advantage in the hybrid structure group's ability to select the top 5 ideas resulting from their ideation exercises. But it wasn't material. Indeed, they note:
"The hybrid process may generate better ideas, but that due to the noisy selection process, its relative advantage is much diminished, to the point of becoming statistically insignificant for one of our quality metrics."
"Noisy selection process", indeed. Ever been in a brainstorming session where you're supposed to rank the ideas at the end? Imagine the dynamics of resolving differences of opinion, time constraints and the extraordinary influence of certain individuals that drowns out other opinions. This is not an optimal way to determine the ideas that define innovation for your organization.
What This Means for Companies Seeking Innovation
As we described previously in "Crowdsourcing Is the New Collaboration", there are many benefits to taking a new approach to idea generation, peer collaboration and integrating innovation more deeply into an organization's culture. Advanced innovation management platforms are ideal for this approach.
As this study confirms, distributing the idea generation process, as well as the idea selection process, results in higher quality ideas for organizations. This study dovetails well with another study by Professor Ron Burt, that found that employees with access to a wider range of viewpoints and feedback generate higher quality ideas.
Brainstorming does have its benefits in terms of face-to-face interactions. Perhaps the nature of what is brainstormed needs to change. Brainstorming can be valuable for project-oriented tasks and problem-solving. But don't consider it your go-to activity for the best ideas.
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Hutch Carpenter is the Vice President of Product at Spigit. Spigit integrates social collaboration tools into a SaaS enterprise idea management platform used by global Fortune 2000 firms to drive innovation.Labels: Brainstorming, crowdsourcing, Hutch Carpenter, Ideas, Innovation, Innovation Management



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Crowdsourcing starts with the contributions of people from around the globe. These submissions are aggregated into a common site. Submissions are provided in the format matching the contest objectives.
People provide their feedback on the submissions of others. This feedback can be up-down votes, star ratings, comments and buying into ideas with virtual currency. This process can be collaborative, helping refine submissions.
Organizations establish panels of experts who review the crowdsourced submissions, and select those best meeting their requirements. Experts possess distinct domain knowledge to make the final decision in the contest.
The winners of the contest are determined by people's votes and other measures. This selection process is a mix of overall crowd sentiment, weighted for higher reputed members, and the power of individuals to leverage word-of-mouth marketing.



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ComMetrics is a social media analytics company, a division of CyTRAP Labs GmbH. ComMetrics is well-known in the industry, including its FT ComMetrics Blog Index.
Which brings me to the second point about simple up-down votes. These votes do provide valuable feedback. You get an early read on what is resonating with the crowd, which is a valuable filter. But they lack nuances that can help identify the best among ideas that are resonating.
Kevin Roberts is the CEO worldwide of The Lovemarks Company, Saatchi & Saatchi. For more information on Kevin, please go to
A marketing professional turned entrepreneur, Vyoma avidly supports and practices open innovation. Earlier this year, she founded Colspark LLC (
Crowdsourcing is becoming a part of many companies' innovation strategy. But crowdsourcing suffers from a number of problems that limit its effectiveness. By selecting 'emerging customers' - who are better at spotting winning innovations - and helping them innovate around unmet customer needs, crowdsourcing can be turned into smartsourcing. Leading companies like Cisco already use smartsourcing to identify tomorrow's winning innovations.
The first of these is Dell with its
The second example is Starbucks with its
One company that got it right is Cisco with its
Only when you know where the innovation sweet spot is should you seek to harness the creativity of customers. And not just any old customers either. As Dell and Starbucks' experience with crowdsourcing shows, harvesting ideas from the mass of customers produces a very small number of good ideas and a large volume of poor ones. It also generates a lot of wasteful costs if ideas are to be assessed properly. Recent research on
Graham Hill is a Customer-centric Innovator and CRM Guru at CustomerThink.com.
A classic dilemma for companies is determining the best way to foster innovation. There are many good books with different approaches. Clayton Christensen's "Innovator's Dilemma" has influenced a generation's thinking about innovation. He focuses management and entrepreneurs' attention on the Big I: 'disruptive innovation'.
A couple examples of interest here. First, let's go back to Motorola. Yes, the company muffed it badly on the transition from analog to digital. But there was something that it did right years before. Motorola researcher Jim Mikulski could see in the 1960s that
Whirlpool is a good example of this. In 1999, then-CEO David R. Whitwam made the determination that Whirlpool needed to stop competing on price, and make innovation its central strategy. Fast forward to today, and the results have been stellar. Whirlpool has escaped competing as a commodity vendor,
Google is a good example of a company that does both. Its 20% time for employees to devote to innovation is the stuff of business legend. And 

by Braden Kelley

All companies have challenges. They can be technical challenges on how to create a particular chemical compound. They can be marketing challenges on how to best describe your product to increase market share. They can be HR challenges around improving employee engagement.
Every challenge has multiple potential solutions. And there are multiple ways in which to find these solutions.
The final attribute of a culture of innovation is the ability to take all of the selected solutions and turn them into programs/projects so that they can be converted from ideas into reality.
It is done by enthusiastic folks around the globe with decent web programming knowledge. They downloaded the SDK, developed the app and hosted it all for free. The buck doesn't stop there. After it gets uploaded, the importance of these applications is decided by other users. As more folks add a particular application to their profile, its rating goes up. If the application is not interesting enough for the community, it gets automatically pushed down the stack. From the user's perspective, they can choose and install applications of interest to them, thereby 'personalizing' their profile. This is the real power of crowdsourcing - consumers as creators.
On a larger scale, the idea of crowdsourcing has been harnessed by Apple (iPhone) and Google (Android) - these firms designed a monetization model allowing developers to host their applications and quote a price. When users download the developer's application a portion of payment goes to the developer. 








