What Actually Happens When You Use De Bono Thinking Tools in Practice
I once ran a project retrospective using the De Bono Thinking Course framework across a team of eight people, and within twenty minutes we had clearly identified three bottlenecks that had been sitting unaddressed for months. That isn't because the method is magical. It's because the structure forces people out of habitual thinking patterns, even if briefly. The Six Thinking Hats tool in particular changed how our meetings ran. Before, every discussion would spiral into argument about who was right. After adopting the framework, conversations became noticeably shorter and more factual. The De Bono Thinking Course is built around Edward de Bono's concept of parallel thinking, where participants examine a problem from multiple structured perspectives rather than arguing positions against each other. The main tools include Six Thinking Hats, PM+, Six Boxes, and the Conceptual Filter. Each tool targets a different mode of thinking. The Six Thinking Hats asks people to wear different colored metaphorical hats representing distinct thought modes: white for facts, red for emotions, black for caution, yellow for optimism, green for creativity, and blue for process control. PM+ stands for Plus, Minus, and Interesting, pushing people to list positive outcomes, negative outcomes, and neutral observations separately. Six Boxes organizes thinking into six chambers: Knowledge, Feelings, Risks, Benefits, Creativity, and Control. The Conceptual Filter helps identify what assumptions are driving a decision.
De Bono Thinking Course: How to Actually Use It Without Wasting Time
Here is the practical part that most guides skip. Start with a clear problem statement written on a whiteboard or shared document. Everyone reads it once in silence. Then pick one hat or one tool and commit to it for five to ten minutes. For the Six Thinking Hats, go in color order: white, red, black, yellow, green, blue. Do not skip ahead. Do not let someone start discussing green ideas while the black hat is still active. This discipline is what makes the method work, and it is also what makes it frustrating at first because people naturally want to jump to solutions. I have found that the black hat tends to dominate meetings unless explicitly controlled. People are comfortable critiquing. They are less comfortable expressing raw emotion or generating creative alternatives. The red hat is often the hardest for professionals to use honestly. In my experience, when you enforce a two-minute red hat round where people state their gut feeling without justification, the quality of subsequent discussion improves dramatically. People feel heard, and the black hat attacks lose some of their emotional weight afterward. For PM+, the process is simpler but requires equal rigor. Write three columns: Plus, Minus, Interesting. Fill each one before moving to the next. The Interesting column is the one most people skip, and it is usually the most valuable. It captures side effects, unexpected opportunities, and borderline observations that do not fit neatly into positive or negative categories.
One edge case I ran into recently involved a product launch decision where the team needed to evaluate both strategic risks and creative alternatives simultaneously. The standard Six Thinking Hats sequence felt too slow for the timeframe we had. I adapted by running black hat and yellow hat in parallel. Two people took the black hat perspective, two took yellow, and they reported findings independently before the group synthesized them. This cut the exercise from roughly forty minutes down to about fifteen, and the results were actually sharper because the perspectives did not bleed into each other. The tradeoff is that this shortcut requires a facilitator who understands the tools well enough to prevent cross-contamination between hats. Another common mistake is treating the tools as a one-size-fits-all solution. The De Bono Thinking Course works best for team-based decision making and problem solving. It is less effective for solo reflection or for problems that are purely technical and have well-established analytical frameworks. If you are doing code architecture review or financial modeling, statistical methods and domain-specific analysis will serve you better than Six Thinking Hats. The tools are designed for ambiguity and conflicting perspectives, not for calculations. There is also a limitation worth acknowledging. The method assumes a baseline level of psychological safety in the group. In organizations where people fear speaking openly, the red hat will produce sanitized emotional responses, and the green hat will yield weak ideas. Nothing about the framework fixes that underlying problem. It can surface it, sometimes painfully, but it cannot resolve it alone.
Get the Full Details

If you want to learn more about the De Bono Thinking Course, the original materials are available through official de Bono training providers and published books. The concepts themselves are not proprietary, so many free resources exist online that cover the basics. The Six Thinking Hats book and the Plus-Minus-Interesting guide are good starting points. I recommend working through one tool at a time rather than trying to adopt everything at once. Pick Six Thinking Hats or PM+, run a single session, evaluate the result, and decide whether it is worth repeating. The real value of the De Bono Thinking Course is not in any single technique. It is in the habit of deliberately switching thinking modes. Most people operate from a default style without realizing it. The framework interrupts that autopilot. It is not a cure for poor communication or lack of expertise, but it does create space for better conversations, especially in groups where everyone has been thinking the same way for too long.