17.2 Innovation Techniques: Design Thinking, Brainstorming & Ideation

Design Thinking

Design thinking is a human-centred problem-solving approach, popularized by IDEO and the Stanford d.school, built on five non-linear modes.

1. Empathize — understand the user's actual experience through observation and interview rather than through stakeholder description of it. This is the mode most often skipped, and skipping it produces solutions to the problem the sponsor described rather than the one the user has.
2. Define — frame a point of view: [user] needs [need] because [insight]. The reframe is where the value is; a well-defined problem constrains the solution space usefully.
3. Ideate — generate a wide range of options before selecting, deliberately separating generation from evaluation.
4. Prototype — build the cheapest possible representation that can be tested. A paper storyboard, a role-played conversation, a single mocked screen.
5. Test — put the prototype in front of real users and treat failure as information. The loop back to earlier modes is expected rather than a sign of poor planning.

Design Thinking Versus ADDIE

Both are structured, and CPTD scenarios test whether candidates can choose between them.

The decisive question is whether the problem is well understood. A known compliance requirement does not need empathy interviews. A programme that has failed twice for reasons nobody can articulate does.

Brainstorming: What the Research Actually Says

Osborn's four rules — defer judgment, encourage wild ideas, build on others' ideas, go for quantity — remain sound. The problem is the delivery format. A large body of research finds that a group brainstorming aloud together produces fewer and less original ideas than the same number of people ideating individually and pooling afterwards. Three mechanisms explain it:

• Production blocking. Only one person speaks at a time, so everyone else is waiting, and while waiting they rehearse and forget.
• Evaluation apprehension. People withhold unusual ideas in front of colleagues and especially in front of their manager, which removes exactly the contributions divergence exists to surface.
• Social loafing. Individual contribution is not identifiable in a group, so effort falls.

The corrections are structural rather than motivational:

• Brainwriting. Everyone writes ideas silently first, then ideas are pooled and built on. This single change addresses all three mechanisms.
• Nominal group technique. Silent generation, round-robin sharing so every person contributes without interruption, clarification, then independent ranking. Strong where hierarchy would otherwise dominate.
• Manager speaks last. Anchoring is immediate and hard to reverse; a senior person's early opinion narrows the space before it has been explored.
• Quantity target before quality. A stated target — sixty ideas in fifteen minutes — suppresses the self-editing that kills unusual contributions.

Structured Ideation Techniques

Separating Divergence From Convergence

The single most common facilitation failure is allowing evaluation into the generation phase. Divergence and convergence must be separated in time and explicitly signalled — "for the next fifteen minutes we are generating only; nobody evaluates anything, including their own ideas."

Convergence needs structure too, or the group simply selects the idea proposed by the most senior person. Useful methods include dot voting with a limited allocation, an impact-versus-effort grid, and defined selection criteria agreed before the ideas are reviewed so that criteria cannot be retrofitted to justify a preferred option.

Constraints help. The evidence consistently shows that constrained challenges produce more and better ideas than open ones. "Design a better onboarding experience" produces less than "design an onboarding experience that gets a new hire productive in ten days, costs under $400 per head, and requires no more than two hours of a manager's time."

The Organizational Conditions

Technique is the smaller half. Three conditions determine whether any of it produces anything:

1. Psychological safety. Where proposing an unusual idea carries reputational risk, no technique recovers the ideas that are never voiced.
2. A decision route. Ideas need a named owner, a decision date, and a threshold for proceeding. An ideation session with no route produces a wall of sticky notes and a photograph.
3. Visible action and honest feedback. People contribute again when they see what happened to the last contribution — including ideas that were rejected, with the reason. An organization that ideates repeatedly and acts never is actively teaching its workforce that contributing is pointless, and the second session is always quieter than the first.

Exam Trap: A scenario describing an unstructured group brainstorm dominated by senior voices is testing recognition of production blocking and evaluation apprehension. The corrective is structural — silent individual generation first, round-robin sharing, senior voices last — not an exhortation to participate more freely or a larger, more diverse group using the same format.