Thursday, 15 October 2015

CHAPTER 1: WHAT IS COGNITION AND DESIGN


COGNITION

Cognition is the set of all mental abilities and process related to:

  • knowledge
  • attention
  • memory and working memory
  • judgement and evaluation
  • reasoning and computation, problem solving and decision making
  • comprehension and production of language
Human cognition is conscious and unconscious, concrete  or abstract as well as intuitive and conceptual. Cognitive processes use existing knowledge and generate new knowledge.


DESIGN

Design is a plan scheme in mind and intended for subsequent execution. it must be a practical and creative idea. design that was created must develop a product that help its users achieve their goals.

How Can A Design Achieve A Goal?


®Must begin with gaining some understanding of what is required of it. For example,

¯where do these requirements come from?
¯whom do we ask about the requirements?

® Involving users
¯But who are the users?
¯Do/will they know what they want or need?

4 Basic Activities Of Design

1. Identifying Needs and Establishing Requirements
* Who are the users?
* What can the product provide to its users?

2. Developing Alternative Designs
*Conceptual design
*Physical design

3.Building or Development
*Paper-based prototype
*Sketch
*Blueprint

4.Evaluating
*Determine the usability and acceptability of the product or design
*determine number of errors users make using it



Life-cycle Design Model.

Simple Life-cycle Design Model




*Show how activities are related each other.
*Life-cycle models are:
-management tools
-simplified versions of reality
*Many life-cycle models exist, for example:
-Software engineering:
  • waterfall


  • spiral

  • Rapid Applications Development(RAD)

-Human Computer Interaction:
  • Star















     Usability Engineering












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