Alex Osborn Applied Imagination Session
This 60-minute workshop structures campaign ideation using the original four rules of creative problem solving. Follow the Alex Osborn brainstorming routine to generate high-volume ideas before shifting into objective evaluation.
5 time blocks, 60 minutes in total.
Time blocks
- Problem Framing and Orientation: 10 min
State the objective clearly and break complex issues into sub problems - Uninhibited Idea Storming: 15 min
Produce a high volume of raw concepts while deferring all judgment - Osborn Transformation Checklist: 15 min
Apply prompts to substitute, combine, adapt, modify, or reverse ideas - Idea Hitchhiking and Synthesis: 10 min
Build directly on suggestions from others to form compound concepts - Strategic Criteria Screening: 10 min
Switch to critical judgment and evaluate candidates against goals
About this routine
Alex Osborn created the practice of corporate brainstorming in 1939 while leading advertising agency BBDO. He later detailed the process in his 1953 book Applied Imagination. The classic Alex Osborn brainstorming routine divides creative work into two distinct stages: a green-light period dedicated to raw idea generation and a red-light period focused on critical judgment.
Osborn recognized that immediate criticism halts creative flow. His method enforces strict deferred judgment during the early phase, encouraging participants to produce maximum volume and welcome unusual proposals. The team then uses transformation prompts such as substitute, combine, adapt, and reverse to expand upon promising leads before any filtering takes place.
By separating generation from evaluation, campaign teams avoid early stagnation and groupthink. Running this structured 60-minute session provides a clear path from open speculation to practical campaign concepts ready for executive review.
Why this routine works
- Eliminates early criticism to boost raw concept output
- Uses action-verb prompts to expand single ideas into full campaigns
- Creates clear separation between creative flow and logical evaluation
- Encourages team hitchhiking to build stronger compound proposals
FAQ
What is the Alex Osborn brainstorming routine?
It is a creative problem solving format created by BBDO executive Alex Osborn in 1953. It separates raw idea generation from critical evaluation through strict green-light and red-light phases.
What are the four rules of Alex Osborn's brainstorming?
The four rules are deferring criticism, welcoming wild ideas, prioritizing high volume, and combining or improving existing ideas.
How long does an Alex Osborn brainstorming session take?
A standard session takes 60 minutes, divided between problem framing, uninhibited ideation, idea modification, and final screening.
Sources
- Applied Imagination: Principles and Procedures of Creative Thinking, Alex F. Osborn
- The History of Brainstorming, Mind Tools
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Updated August 2026
Compiled from public sources and reviewed before publishing.