Example Sequence of Stages
Typical stages consistent with The Rational Model include the following.
- Pre-production design
- Design brief or Parti pris – an early (often the beginning) statement of design goals
- Analysis – analysis of current design goals
- Research – investigating similar design solutions in the field or related topics
- Specification – specifying requirements of a design solution for a product (product design specification) or service.
- Problem solving – conceptualizing and documenting design solutions
- Presentation – presenting design solutions
- Design during production
- Development – continuation and improvement of a designed solution
- Testing – in situ testing a designed solution
- Post-production design feedback for future designs
- Implementation – introducing the designed solution into the environment
- Evaluation and conclusion – summary of process and results, including constructive criticism and suggestions for future improvements
- Redesign – any or all stages in the design process repeated (with corrections made) at any time before, during, or after production.
Each stage has many associated best practices.
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