Go for quantity over quality
Set a raw count target — the goal is many ideas, not good ones.
Why it works
Fluency (total number of ideas) is the strongest predictor of finding a high-quality idea in a session: more ideas means more lottery tickets. The quantity rule also shifts the frame from performance ("produce something impressive") to output ("hit the number"), which reduces anxiety and increases experimentation. People are less precious about individual ideas when volume is the metric.
How to do it
- Set a specific numerical target before the session ("we want 50 ideas in 20 minutes").
- Track the count visibly so the number, not quality, becomes the scoreboard.
- Keep moving — never stop to polish or explain an idea during generation.
- When stuck, use prompts or random stimuli to keep the count climbing.
Evidence
Across creativity research, fluency predicts the likelihood of a high-quality idea; this relationship is among the most robust findings in ideation research. Simonton’s equal-odds model of creative careers extends this: total output volume, not a higher hit rate, is what predicts landmark work across a person’s trajectory. (observational)
The fluency-quality link means more ideas gives better odds, not certainty; sheer volume without any evaluation step does not guarantee breakthrough ideas.
Sources
- Guilford (1967), The Nature of Human Intelligence (divergent production and fluency)
- Simonton, D. K. (1997). Creative productivity: A predictive and explanatory model of career trajectories and landmarks. Psychological Review, 104(1), 66–89.
Common mistake
Setting the count target so low (10 ideas) that people coast to it and stop — the target needs to push past comfortable into uncomfortable territory to force less-obvious ideas.
Practice this with IX Coach
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More practices for Osborn’s Brainstorming Rules, Made Practical
- Defer judgment during ideation
Separate generating ideas from evaluating them — criticism comes later, never during.
- Welcome wild and outrageous ideas
Explicitly invite the absurd — it’s easier to tame a wild idea than to enliven a dull one.
- Combine and build on others’ ideas
Treat every idea as a building block — the best ideas in a session are usually hybrids.
- Use brainwriting to defeat production blocking
Have everyone write ideas silently at the same time, then share — this is the group brainstorm that research actually supports.
- Use round-robin turns to equalize contribution
Give everyone a timed, equal turn — it prevents a few voices from dominating and pulls quieter members into the space.
- Harvest and cluster ideas after the session
The generation phase is worthless without a systematic harvest: sort, name, and prioritize the output.
Related concepts
- Divergent Thinking: Generating Many Ideas
Generating quantity, separating ideation from judgment, and why group brainstorming disappoints
- Design Thinking, Step by Step
The five stages, the mechanism behind each, and where the process actually helps
- The Artist’s Way, Made Practical
Morning pages, artist dates, and unblocking creativity — with an honest read on the evidence