Designing and Testing

• Developing an understanding of the user's mental model

• Observe users doing the task to identify the elements of the user's mental model

• Clumping task elements and naming the clumps

• Sorting task elements into pre-existing categories

• Developing a workable design

• Mapping the task into a decision tree

• Task walk-through

• Prototyping

• Responding to feedback

© UW C&C 1997