How do you choose between a group brainstorming session and a period of individual reflection to generate actionable ideas? The answer depends less on the method you choose than on when each approach is used in the creative process. There are several practical tools for stimulating creativity, but their results vary depending on the context, group size and objective.
Individual or group ideation: what recent research measures
Most creativity guides present techniques without distinguishing how effective they are in different work formats. The available data provide a more precise framework.
| Criterion | Individual ideation first | Direct verbal brainstorming |
|---|---|---|
| Number of ideas generated | Higher: each participant writes without waiting for their turn | Reduced by waiting, forgetting and self-censorship |
| Diversity of ideas | Broader: no anchoring effect from the first idea voiced | Tendency to conform around the first suggestions |
| Engagement of introverts | High: writing protects against social pressure | Low: dominant voices take up the speaking time |
| Mutual enrichment | Limited until ideas are shared | Immediate, through verbal exchange |
| Best use case | Divergent phase, broad exploration | Convergent phase, selection and combination |
The Resilience Institute notes that starting alone before sharing with the group produces more ideas. Traditional verbal brainstorming, where everyone takes turns speaking, slows idea generation: participants wait, forget or hesitate to suggest an unconventional idea.
The most productive approach combines both stages. A few minutes of silent work followed by a structured sharing session draws on both individual diversity and collective enrichment.
Structured creativity tools: how to choose based on your objective
Among Ouvre Tête’s tools and the methods documented in facilitation literature, three categories stand out for their role in the ideation process.
Divergent exploration tools
These methods aim to generate as many ideas as possible without judging them. Brainwriting (each participant writes their ideas on paper, then passes them to a neighbor to build on) sidesteps the problem of verbal self-censorship. The SCAMPER method transforms an existing concept by systematically modifying it: magnify, reduce, combine, reverse.
- Brainwriting works with groups of six to fifteen people and requires no special equipment, just paper and a timer
- SCAMPER can be applied to a physical product, a service or an internal process
- Trigger words (free association based on a random term) can get sessions unstuck when the group keeps circling around the same ideas
Convergent structuring tools
Once ideas have been generated, they need to be sorted. The “How Now Wow” matrix ranks each suggestion along two axes: feasibility and originality. “Wow” ideas (original and feasible) stand apart from “How” ideas (original but difficult to implement) and “Now” ideas (feasible but conventional).
Sorting ideas immediately after generating them prevents the session from losing focus. Without this step, creativity sessions produce lists that lead to no concrete action.
Tools for deeper exploration
The Five Whys method, originally designed for problem analysis, also works in creative thinking. Asking “why?” five times about a new idea forces the group to identify how it really works and uncover implicit assumptions.
Each category of tools corresponds to a distinct phase of the creative process. Using a divergent tool during the sorting phase, or a convergent tool too early, leads to frustration without results.
Generative AI and creativity: a measured effect on idea diversity
Using AI as an ideation partner is becoming more common, but its effects are not uniform. A study published in Science Advances in July 2024 (Doshi and Hauser) compared short stories written with and without suggestions from GPT-4.
Evaluators rated the stories produced with AI assistance as more creative individually. But the AI-assisted stories were more alike overall, reducing the collective diversity of the output. The tool improved each idea in isolation while making the overall body of work more homogeneous.
The experiment focused on short-story writing, not every form of professional ideation. The effect also varied among participants: people whose initial associations were less broad benefited more.
For a group looking for varied solutions to a problem, this finding has a direct implication. AI can serve as an individual accelerator, particularly for participants who are less comfortable with divergent thinking. However, asking every group member to use the same generative tool with the same prompt risks concentrating suggestions within a narrow range.
Sequencing creativity tools: divergence, sorting and deeper exploration
Most ideation sessions fail because the phases get mixed together. One participant suggests an idea, another immediately criticizes it, and a third tries to change it before it has been understood. This overlap kills the creative momentum.
Making the sequence explicit changes everything:
- Divergent phase (brainwriting, trigger words, SCAMPER): each participant generates ideas without filtering for a set amount of time, with no comments or evaluation
- Sorting phase (How Now Wow matrix, silent dot voting): the group ranks ideas according to criteria defined in advance
- Deeper exploration phase (Five Whys, rapid prototyping): the two or three selected ideas are developed and tested against the project’s real-world constraints
This structure also works for solo work. The challenge is not knowing the methods, but resisting the urge to judge an idea before the exploration phase is complete.
Choosing a creativity tool is not a matter of personal preference. It depends on which phase of the process the group (or individual) is in and on the type of result expected: volume, originality or feasibility.
