1. CIS 376 Bruce R. Maxim UM-Dearborn
User Interface Design
CIS 376
Bruce R. Maxim
UM-Dearborn

2. Usability Engineering
The process of basing design on user needs, not technology availability.
When two products have the same functionality, users will choose the on which seems to be more "usable".

3. What is design? Process not a state Design process is non-hierarchical
Design process involves radical transformation
Involves discovery of new goals

4. Three Pillars of Design
Guideline documents and processes
User interface software tools
Expert reviews and usability testing

5. Logical User-Centered Interactive Design (LUCID) Methodology
Develop project concept
Perform needs analysis
Design concepts and key-screen prototypes
Iterative design and refinement
Implement software
Provide rollout support

6. LUCID requires the following activities to be performed at each stage:
Product definition
Business case
Resource analysis
Physical environment consideration
Technical environment consideration
User needs analysis
Functionality analysis
Prototype construction
Usability assessment
Design guidelines
Content analysis
Documentation, training, help

7. Ethnographic Observation of Users
Preparation
Field study
observe without questioning
interview users after the fact
give users hypothetical problems to solve
assume the user’s role
Analysis of objective and subjective field data
Reporting results

8. Participatory Design Advantage: Disadvantages:
users buy in to final product
Disadvantages:
increased cost and time
potential alienation of some user groups whose input is not followed

9. Task Scenario Construction
Similar to OOA/OOD scenario work
Scenario Design Tools
Tables (e.g. user groups vs user tasks)
Flowcharts
Transition diagrams
CRC cards

10. Social Impact Statement
Describes new system and its benefits
Addresses concerns and potential barriers
Outlines development process

11. Relevant Legal Issues Privacy Safety and reliability
Copyright protection
Freedom of speech