Module 3: Design Techniques

• Design Methodologies:

  • Iterative Design
  • System Centered Design
  • User Centered Design
  • Participatory Design
  • Designer Centered Design
• Four Approaches:

  • Anthropomorphic Approach
  • Cognitive Approach
  • Predictive Modeling Approach
  • Empirical Approach
• Anthropomorphic Approach:

  • involves designing a user interface to possess human-like qualities
• Affordance:

  • what a user can do with an object based on the user's capabilities
  • not a "property" of an object
  • defined in the relation between the user and the object
• Cognitive Approach:

  • considers the abilities of the human brain and sensory-perception in order to develop a user-interface that will support the end user
• Attention Span:

  • 2000 : 12 secs
  • Now: 8 secs
  • Goldfish: 9 secs
• Predictive Modeling Approach:

  • GOMS is a method for examining the individual components of a user experience in terms of the time it takes a user to most efficiently complete a goal
• G.O.M.S:

  • Goals
  • Operators
  • Methods
  • Selection Rules
• Empirical Approach:

  • useful for examining & comparing the usability of multiple conceptual designs
  • may be done during pre-production by counterbalancing design concepts and conducting usability testing on each design concept
• Participatory design:

  • includes the users directly on the design team; participating in task analysis, proposing design ideas, helping with evaluation