Brainstorming: Generating Creative Ideas
Brainstorming is a group creativity technique that generates ideas by suspending judgment and encouraging wild thinking. Quantity over quality initially, then evaluate and refine the best ideas.
What Is It?
Brainstorming is the foundational technique for group ideation. Created by advertising executive Alex Osborn in the 1940s, it's based on a simple insight: criticism kills creativity. By separating idea generation from idea evaluation, teams can produce more—and more creative—ideas.
The four classic rules are: No criticism during ideation (defer judgment), Wild ideas welcome (think big), Quantity over quality (generate many), and Build on others' ideas (hitchhike and combine). After ideation, ideas are grouped, evaluated, and refined.
Modern variations include brainwriting (silent written ideation), reverse brainstorming (how to cause the problem), and electronic brainstorming (digital tools for remote teams). The core principle remains: separate divergent thinking from convergent thinking.
Brainstorming connects to Design Thinking as the Ideate phase, SCAMPER for structured prompts, and Futures Thinking for strategic ideation.
Quick Reference
Core Features
- No Criticism: Defer judgment during idea generation
- Wild Ideas: Encourage unconventional thinking
- Quantity Goal: More ideas increase chance of good ones
- Hitchhiking: Build and combine others' ideas
- Facilitation: Someone guides the process
- Time-Boxing: Focused sessions with clear limits
- Capture Everything: Write down all ideas visible to all
When to Use
- Generating new product or feature ideas
- Solving open-ended problems
- Planning events, campaigns, or initiatives
- Overcoming creative blocks
- Building team alignment and engagement
- Starting design or innovation projects
- Exploring alternatives before decisions
When NOT to Use
- Well-defined problems with clear solutions
- When deep expertise analysis is needed
- Highly technical decisions requiring data
- Groups with strong hierarchy or fear
- When there's no intention to act on ideas
Key Strengths
- Creativity: Unlocks ideas that wouldn't emerge otherwise
- Engagement: Involves everyone, builds ownership
- Speed: Generates many ideas quickly
- Simplicity: No training or tools required
- Foundation: Starting point for deeper innovation
Key Weaknesses
- Ideas can be unfocused or impractical
- Dominant personalities can take over
- Requires good facilitation
- Follow-through often lacking
- Groupthink can occur
How It Works
| 1 Primary Input | Clear problem statement, diverse participants, facilitator |
|---|---|
| 2 Data You Need | Problem context, constraints (shared at start), sticky notes/whiteboard |
| 3 Primary Output | Large quantity of ideas, grouped themes, prioritized shortlist |
Comparison with Related Frameworks
Brainstorming vs Design Thinking
Design Thinking is the full innovation process; Brainstorming is one technique used in the Ideate phase. Design Thinking adds empathy, problem definition, prototyping, and testing around brainstorming.
Brainstorming vs SCAMPER
SCAMPER provides structured prompts to guide ideation; Brainstorming is more freeform. Use SCAMPER when you need direction; Brainstorming when you want maximum divergence.