Usability Expert Review and

usability testingElizaveta Skomorokhova

What Do We Mean by ‘‘Usable’’?

• Usefulness• Efficiency• Effectiveness• Learnability• Satisfaction• Accessibility

What is make something less usable?

• Development focuses on the machine or system.• Target audiences change and adapt.• Designing usable products is difficult.• Team specialists don’t always work in integrated ways.• Design and implementation don’t always match.

Development Focuses on the Machine or System

somebody (human); 33%

something (activity); 33%

some place (context); 33%

Nonintegrated approach to product development

technicalcommunactions

User InterfaceDesign

Help andEmbeddedAssistance

Integrated approach to product development

User interface design

Help and Embedded Assistance

Technical Communications

What Makes Products More Usable?

• An Early Focus on Users and Tasks• Evaluation and Measurement of Product Usage• Iterative Design and Testing

What Are Techniques for Building in Usability?

• Ethnographic Research• Participatory Design• Focus Group Research• Surveys

• Paper Prototyping• Expert or Heuristic Evaluations• Usability Testing

What is usability?

The effectiveness, efficiency and satisfaction with which specified users achieve specified goals in particular environments.

What Is Usability Testing?

Why Test? Goals of Testing

• Informing Design• Eliminating Design Problems and Frustration• Improving Profitability

Usability Expert Review

10 Usability Heuristics by Jakob Nielsen

1. Visibility of system status

2. Match between system and the real world

3. User control and freedom

4. Consistency and standards

5. Error prevention

6. Recognition rather than recall

7. Flexibility and efficiency of use

8. Aesthetic and minimalist design

9. Help users recognize, diagnose, and recover from errors

10. Help and documentation

How to conduct an Expert Review

How to conduct an Expert Review

Define application or website goals

Define Personas

Define users’ main scenarios

Expert review

Write a report

Report example

Usability testing

Usability testing types