This document discusses user interface evaluation. It explains that evaluation is done to understand user experience and find ways to improve the system. Evaluation should be done early to validate requirements and predict usability, and later to check usability and requirements when the system is more complete. Evaluation techniques include observing users, interviews, predictions, and usability testing methods like heuristic evaluation and cognitive walkthrough. The goal is to determine if the interface meets requirements, identify usability issues, and understand how experienced and novice users interact with different design features.

1. User Interface Evaluation
Alfian Nurlifa
alfian.nurlifa@ansvia.com
@lifanurlifa

2. What
• Evaluation is something we actually already
do, but without formally saying.
• Example : buy something, then decide good
enough to buy again.

3. Why
• Help us to understand the user experience
with the system and, where there are
difficulties, to find ways to improving it.
– Does the interface meet the usability requirements?
– Why user unable to complete particular task very easily
– Whether the UI that has been developed for novice user is
acceptable to experianced users.
– To find out if the user like a particular design feature

4. When
• Evaluation Early in the life cycle
– Validate the users’ requirements, predict usability, assess
how well the interface meets the users’ need
– Paper-based prototype and mockups
• Evaluation Later in the life cycle
– Assess how well the interface meets the users’ need, check
out the usability and requirements.
– System is more or less ready
– Findings might be used for next version or release

5. How
• Observing the organization and how people
work
• Interviewing, talking, and asking questions
• Making predictions

6. How
• Understanding the User, Tasks, Environment,
and Domain
• Creating an evaluation strategy
• Planning who, what, when, and where
• Deciding how to collect data
• Final preparation for the evaluation
• Analysis and interpretation of user
observation evaluation data

7. Evaluation Thechnique
• Heuristic Evaluation
• Cognitive Walkthrough
• Plural Walkthrough
• Guideline Reviews
• Standar Inspection
• etc

8. Reference
• Stone, D., Jarret, C., Woodroffe, M., Minocha,
S. (2005). ‘User Interface Design and
Evaluation’. Amsterdam : Elsevier Science.

9. Question?

10. Thanks