The process of interaction design

The process of interaction design

1. Interaction Design

   • Plan or schemed conceived in the mind and intended for subsequent execution
   • Great balance requires experience
     • Should always generate alternatives
       • A plan should always be communicated and create sketches
         • Evalation of designs is key

2. 4 Basic activities for design

   • 1) Identify needs & Establish requirements
     • Who are the target users, what activity does it provide
       • People who interact directly with the product to achieve a task
         • Primary Users: Frequent hands on users
           • Secondary Users: Occasional users
       • Stakeholders: People or organizations who will be affected by the system and have a direct or indirect influence, on system requirements
     • Capabilities, how and why they are trying to achieve something
       • Consider cultural diversities, experience and physical characteristics
   • 4) Evaluate & Measure
     • Includes errors, usability and acceptability
       • Important aspects to consider, effectiveness, efficiency, safety, utility, learnability, memorability
   • 2) Develope alternatives designs that make the cut
     • Create a conceptual model of the product
   • 3) Build Interactive Designs
     • Most sensible way for users to interact with the product. Ex: Paperprototype
       • 3 key components of Design
         • Needs to be focused on users
         • Specific usability & UX goals
         • Allows iteration aka Feedback
       • Stick to stuff people know
         • Use inspiration from other inventions
           • Look at the competition
       • You choose one based on external and internal features
         • Quality of the produc is involved

3. Life Cycle Models

   • To represent a model that captures a set of activities and how theyre related
     • Simple LifeCycle Model
       • Incorporates Iteration & encourages user focus
         • Based on information and observations
     • Life Cycles in Software Engineering
       • Waterfall Life Cycle
         • Linear model
           • Each step must be completed before another
             • 5 Steps
       • Spiral Life Cycle Model
         • Encourages alternatives to be considered
           • Problems are encountered and re adressed
       • R.A.D. / DSDM
         • User centered use to minimize risk
           • Time limited cycles: 6 months
             • Incorporate user involvement, evaluation and iteration
               • 5 Phases
             • JAD systems: Users and developers trash out requirements of the system
   • Star Life Cycle Model
     • Does not specify an order of activities
       • Activities highly interconnected
         • Evaluation is key to the model
     • Life Cycles in HCI
       • Usability Engineering Life Cycle
         • Involved analysis, design and installation
           • Substeps may be skipped if not necessary
             • ARANZA ESTRADA A01176250
               • Preece, Jennifer. (2002). Interaction Design. United States of America: John Wiley & Sons Inc.

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