Imran Hussain University of Management and Technology (UMT) Virtual University Human-Computer Interaction Lecture 29 Evaluation – Part I Imran Hussain University of Management and Technology (UMT) 1

Introduction to Evaluation Imran Hussain

Evaluation The process of systematically collecting data that informs us about what it is like for a particular or group of users to use a product for a particular task in a certain type of environment

Design should progress in iterative cycles of design-evaluate-redesign Save money Save time

“Iterative design, with its repeating cycle of design and testing, is the only validated methodology in existence that will consistently produce successful results. If you don’t have user testing as an integral part of your design process you are going to throw buckets of money down the drain” - Tognazzini (Usability Consultant)

Some good reasons Problems are fixed before product is shipped, not after. The team can concentrate on real problems, not imaginary ones. Engineers code instead of debating. Time to market is sharply reduced. Good product design that works for sales pitches. - Tognazzini

Evaluation paradigms and techniques