Ø       Completely restructured to make it easier to teach and learn the key concepts of representation, presentation, and interaction.  A separate chapter is now devoted to each of these key concepts.

Ø       Many new Case Studies are used to illustrate the craft of interaction design and to emphasize the diversity of applications.

Ø       New material introducing the cognitive issues in human performance needed to understand the visualization process.

Ø       Updated examples and illustrations, all in full colour.