Brainstorming

What is Brainstorming?

Brainstorming is a problem-solving technique where a group generates a large number of ideas quickly, without criticism, to identify the best possible solution.

The foundation of effective brainstorming is an atmosphere of suspended judgment. By removing the fear of criticism, teams can unlock fresh thinking and discover "outside-the-box" solutions that might otherwise be suppressed in a standard meeting environment.

The Purpose of Brainstorming in Problem Solving

The primary purpose of brainstorming in problem solving is to move beyond the most obvious answers to find the most effective ones. It is intended to:

• Encourage Fresh Thinking: Break away from "the way we've always done it" and invite "crazy" ideas that often lead to breakthroughs.
• Promote Inclusivity: Ensure every team member’s perspective is considered, regardless of rank or personality type.
• Maximize Volume: Focus on the "flow" of ideas—the more ideas generated, the higher the probability of finding a winning solution.

The Four Pillars of Brainstorming (Osborn’s Rules)

Brainstorming as we know it today was popularized by Alex Osborn, an advertising executive in the 1940s who studied how teams generate ideas most effectively. He found that traditional meetings often shut down creativity too early, and developed a simple set of rules to encourage open, high-volume idea generation.

To maximize results, every session should adhere to these four fundamental rules:

1. Quantity Over Quality: Generate as many ideas as possible. The "big" idea often hides behind the first 20 "safe" ones.
2. Withhold Criticism: NO criticism is allowed—none. Judging ideas early kills momentum.
3. Welcome Unusual Ideas: Perspectives that seem unrealistic at first often reveal hidden opportunities.
4. Combine and Improve: "Hitchhike" on the ideas of others. Use one person’s suggestion as a springboard for another.

Standard Methods: Structured vs. Unstructured

The choice between these two methods depends on your team dynamic and the complexity of the problem.

Structured Brainstorming

In a structured session, every team member offers an idea in rotation.

• Pros: Encourages equal participation and prevents one or two dominant voices from taking over.
• Cons: Can feel restrictive and may interrupt the natural "flow" of spontaneous ideas.

How to Run a Structured Brainstorming Session:

1. Preparation: Form the team and write the problem statement on a flipchart or whiteboard. Ensure the problem is clearly stated and everyone understands the ground rules.
2. The Round-Robin: Moving around the room, each team member offers one idea. Team members are free to pass at any time.
3. Recording: The leader or recorder writes the ideas exactly as stated. Do not paraphrase or edit, as this is a subtle form of criticism. Verify with the speaker that the wording is correct.
4. Iteration: Keep moving around the room in order until there are no ideas left.
5. Review: Review the list for clarity and eliminate duplicate ideas.
6. Categorization: Group or combine ideas into natural categories (often using an Affinity Diagram).

Unstructured (Free-Form) Brainstorming Session:

Ideas are offered by anyone at any time.

• Pros: High energy and allows for rapid-fire idea building.
• Cons: Risk of "Groupthink" or introverted team members being overshadowed by louder participants.

How to Run an Unstructured Brainstorming Session:

1. Preparation: Define the problem statement and display it prominently. Establish the "No Criticism" rule clearly before starting.
2. Open the Floor: Ideas are offered by anyone at any time. The facilitator’s role is to keep the energy high and encourage "hitchhiking" (building on others' ideas).
3. Rapid Recording: Because ideas come quickly, the recorder must work fast to capture every point without editing. If the flow becomes too fast, the facilitator should briefly pause to ensure every idea is captured.
4. Manage the Lulls: When the flow of ideas slows down, the facilitator should encourage the team to look at the board and find new ways to combine or "reverse" the existing ideas.
5. Review and Cleanse: Once the session hits a natural stopping point, review the list for clarity and remove any duplicates.
6. Final Grouping: Organize the raw list into logical categories for further analysis.

Brainstorming Examples - Real-World Applications

Brainstorming is used across industries, from manufacturing floors to healthcare systems. Here are a few examples:

Example 1: Manufacturing (Reducing Setup Time)

Problem: Changeover on Line 4 takes 120 minutes, missing the 60-minute target.

Brainstormed Ideas:

• Pre-stage tools before shutdown
• Use color-coded wrenches to reduce search time
• Move tool cabinets closer to the station
• Record the process so operators can review and improve their own work

Why this works: Notice how many of these ideas target motion and waiting. In a real session, you might generate 30–50 ideas like this before narrowing them down using tools like Multi-Voting or an Affinity Diagram.

Example 2: Service / Healthcare (Reducing Patient Wait Times)

Problem: Patient satisfaction scores are dropping due to long lobby wait times.

Brainstormed Ideas:

• Digital check-in kiosks
• Text-based “room ready” notifications
• Nurse-led intake directly in the lobby
• Redesign scheduling blocks to smooth demand

Why this works: Brainstorming helps teams move beyond the obvious (“hire more staff”) and explore system-level improvements like flow, communication, and scheduling.

Advanced Brainstorming Techniques

When a standard session hits a plateau, these advanced techniques can restart the creative engine:

• SCAMPER: A mnemonic tool to spark new ideas by asking: Can we Substitute, Combine, Adapt, Modify, Put to another use, Eliminate, or Reverse?
• Brainwriting (6-3-5 Method): 6 people write down 3 ideas in 5 minutes, then pass their paper to the right. This is highly effective for remote teams or groups with varying power dynamics.
• Reverse Brainstorming: Instead of asking "How do we solve this?", ask "How could we make this problem worse?" Identifying ways to cause a failure often reveals hidden root causes and obvious solutions.
• Starbursting: Focuses on generating questions rather than answers. By asking "Who, What, Where, When, Why, and How" about a specific concept, teams can vet the feasibility of an idea before committing resources.

Facilitator's Best Practices

A brainstorming session is only as good as its facilitation. Follow these tips to ensure success:

• The 24-Hour Rule: Send the problem statement to the team 24 hours in advance. This allows "Incubation Time" and prevents Anchoring Bias (where the team only focuses on the first idea mentioned).
• Visual Recording: Use a whiteboard or digital canvas. Seeing the ideas grow visually encourages "hitchhiking" and prevents the team from repeating ideas.
• Manage the "Loudest Voice": If one person is dominating, the facilitator should pivot to a structured round or a brainwriting exercise to level the playing field.
• The "Parking Lot": Keep a side list for great ideas that don't solve the current problem but are worth exploring later. This keeps the session focused without insulting the contributor.

When to Use Brainstorming vs. Other Tools

Hybrid Tools: What Happens Next?

Brainstorming is the first step in the problem-solving journey. To make the output actionable, pair it with these Lean Six Sigma tools:

• Brainstorming + Affinity Diagram: Use an Affinity Diagram to organize a messy list of 50+ ideas into logical categories.
• Brainstorming + Multi-Voting: Once ideas are generated, use voting to narrow the list down to the "Top 3" for testing.
• Brainstorming + Fishbone: Use brainstorming to populate the branches of a Fishbone Diagram during a Root Cause Analysis (RCA).

Related Tools & Resources

• Affinity Diagram: The "Organizer Tool." Use this to make sense of a brainstorm that produces 50+ ideas.
• Fishbone (Ishikawa) Diagram: The "Categorization Tool." Use brainstorming to populate the branches of this diagram.
• Root Cause Analysis: Visit our toolbox page on Root Cause Analysis for a comprehensive look at methodologies used to solve complex problems.

Additional References & Sources

• Applied Imagination, Alex Osborn (The foundation of brainstorming rules).
• The Fifth Discipline: The Art & Practice of the Learning Organization, Peter Senge (ISBN 0-385-26095-4).
• The Fifth Discipline Fieldbook, Senge, Kleiner, Roberts, Ross, Smith (ISBN 0-385-47256-0).