Design process and design thinking

Design Process is a systematic, iterative approach to solving problems through creative and analytical thinking. The Cambridge IB Design Technology syllabus emphasizes several established models:

Linear Design Process follows sequential stages: research → ideation → development → prototyping → testing → evaluation. Though rarely used in pure form, it provides foundational understanding.

Iterative Design Process involves cyclical stages where designers continuously loop back, refining solutions based on feedback. This reflects real-world practice more accurately.

Design Thinking is a human-centered methodology pioneered by IDEO and Stanford d.school, comprising five key phases:

1. Empathize: Understanding user needs through observation, interviews, and immersion
2. Define: Synthesizing research to articulate the core problem statement
3. Ideate: Generating diverse solutions through brainstorming and creative techniques
4. Prototype: Creating tangible representations to explore solutions
5. Test: Gathering user feedback to refine iterations

Key Terminology:

• Divergent Thinking: Exploring multiple possible solutions (widening options)
• Convergent Thinking: Narrowing to optimal solutions (selecting best options)
• User-Centered Design (UCD): Placing end-users at the heart of design decisions
• Iteration: Repeated cycles of prototyping, testing, and refinement

Cambridge Note: The syllabus expects students to compare different design processes and justify which is most appropriate for specific contexts.

Design Fixation occurs when designers prematurely commit to one solution, limiting innovation. The antidote is maintaining openness throughout the process and deliberately practicing divergent thinking before convergence.

Think of the design process like cooking a new recipe. You don't simply throw ingredients together; you taste, adjust seasoning, and refine. Similarly, designers iterate continuously rather than following a rigid path.

Real-World Application: Dyson Vacuum Development

James Dyson created 5,127 prototypes over 15 years before perfecting his bagless vacuum. This exemplifies:

• Iteration: Each prototype informed the next
• Testing: Continuous user feedback drove improvements
• Empathy: Understanding user frustration with traditional vacuums losing suction

IDEO Shopping Cart Redesign demonstrates design thinking brilliance:

Empathize: Teams observed shoppers, noting child safety concerns, maneuverability issues, and shopping behavior patterns

Define: "How might we create a safer, more efficient shopping experience?"

Ideate: Generated 100+ concepts through rapid brainstorming

Prototype: Built functional prototypes using found materials in days, not months

Test: Gathered immediate user feedback in stores

Result: Modular cart system with swappable baskets, improved child seating, and enhanced scanner integration.

Medical Device Example: The insulin pen emerged from observing diabetics' daily struggles. Designers empathized with emotional and physical challenges, moving beyond clinical requirements to create discreet, user-friendly devices that dramatically improved patient compliance.

Analogy: Design thinking is like jazz improvisation—you need foundational structure (musical theory/design principles) but must respond fluidly to what's happening in the moment (user needs/feedback). The best solutions emerge from this dynamic interplay, not rigid adherence to predetermined plans.

Cambridge examiners value contextual application—always connect theoretical knowledge to specific design scenarios.

Example 1: Process Selection Question

Question: "Compare linear and iterative design processes for developing a new smartphone app for elderly users. Recommend the most appropriate approach. [8 marks]"

Model Answer:

Linear Process follows sequential stages (research→design→development→testing→launch). Advantages: Clear milestones, predictable timelines, suitable when requirements are fully understood. Disadvantages: Inflexible to changing user needs, late-stage problems are costly to fix, assumes perfect initial understanding.

Iterative Process involves cyclical refinement with continuous user feedback. Advantages: Responds to evolving requirements, identifies usability issues early, produces user-centered outcomes. Disadvantages: Potentially longer timelines, requires ongoing user access, may lack clear endpoints.

Recommendation: Iterative approach is superior for elderly user apps because: (1) This demographic has specific accessibility needs discoverable only through testing (e.g., font sizes, touch targets); (2) Designers cannot assume understanding of elderly users' digital literacy; (3) Early prototypes reveal usability barriers; (4) Multiple iterations ensure genuine user-centeredness rather than designer assumptions.

Examiner Note: This answer scores highly by comparing both approaches systematically, using relevant terminology, and justifying the recommendation with specific, contextual reasoning.

Example 2: Design Thinking Application

Question: "Using design thinking principles, outline how you would approach redesigning a school cafeteria service. [6 marks]"

Model Answer:

Empathize: Interview students, observe lunch rush behaviors, identify pain points (long queues, limited healthy options, rushed eating). Survey preferences across age groups.

Define: Core problem—"Students need faster service delivering nutritious meals that accommodate diverse dietary requirements and limited lunch periods."

Ideate: Brainstorm solutions—pre-ordering systems, multiple food stations, grab-and-go options, digital menus, express lanes.

Prototype: Create mockup station layouts, test mobile ordering app with student focus groups, trial express lane during one lunch period.

Test: Gather feedback on wait times, food quality, satisfaction. Measure service efficiency. Refine based on data.

Examiner Note: Strong answers demonstrate understanding of each phase and provide specific, contextual examples.