Effectiveness – Can users achieve what they need by using the product? Ease of learning – How fast can user who has never seen the interface learn to use it? Efficiency of use – How fast can users complete the tasks? Memorability – Can users remember enough to reuse the interface effectively? Error Prevention – The best way to deal with errors is to design the interface so users do not make errors. Satisfaction – How much does the users like using the system? Usability: WHY So User Centered? You can’t control the person, but you can design the environment to change behavior B=f(P+E) Means - "Behavior is a function of a Person and his Environment" -Lewin’s Equation Don Norman – User Experience: "User experience" encompasses all aspects of the end-user's interaction with the company, its services, and its products. The first requirement for an exemplary user experience is to meet the exact needs of the customer, without fuss or bother. Next comes simplicity and elegance that produce products that are a joy to own, a joy to use. True user experience goes far beyond giving customers what they say they want, or providing checklist features. In order to achieve high-quality user experience in a company's offerings there must be a seamless merging of the services of multiple disciplines, including engineering, marketing, graphical and industrial design, and interface design. Thank you, www.uxmallesh.com

1. What is
USABILITY ENGINEERING
Mallesh.N
HFI Certified Usability Analyst
www.uxmallesh.com

2. Usability is about:
 Effectiveness

3. Usability is about:
 Effectiveness – Can users achieve what they need by
using the product?

4. Usability is about:
 Effectiveness – Can users achieve what they need by
using the product?
 Ease of learning

5. Usability is about:
 Effectiveness – Can users achieve what they need by
using the product?
 Ease of learning – How fast can user who has never
seen the interface learn to use it?

6. Usability is about:
 Effectiveness – Can users achieve what they need by
using the product?
 Ease of learning – How fast can user who has never
seen the interface learn to use it?
 Efficiency of use

7. Usability is about:
 Effectiveness – Can users achieve what they need by
using the product?
 Ease of learning – How fast can user who has never
seen the interface learn to use it?
 Efficiency of use – How fast can users complete the
tasks?

8. Usability is about:
 Effectiveness – Can users achieve what they need by
using the product?
 Ease of learning – How fast can user who has never
seen the interface learn to use it?
 Efficiency of use – How fast can users complete the
tasks?
 Memorability

9. Usability is about:
 Effectiveness – Can users achieve what they need by
using the product?
 Ease of learning – How fast can user who has never
seen the interface learn to use it?
 Efficiency of use – How fast can users complete the
tasks?
 Memorability – Can users remember enough to reuse
the interface effectively?

10. Usability is about:
 Error Prevention -

11. Usability is about:
 Error Prevention – The best way to deal with errors is
to design the interface so users do not make errors.

12. Usability is about:
 Error Prevention – The best way to deal with errors is
to design the interface so users do not make errors.
 Satisfaction –

13. Usability is about:
 Error Prevention – The best way to deal with errors is
to design the interface so users do not make errors.
 Satisfaction – How much does the users like using the
system?

14. Usability: WHY So User Centered?
You can’t control the person, but you can design the
environment to change behavior
B=f(P+E)
Behavior is a function of a Person and his
Environment
- Lewin’s Equation

15. Don Norman – User Experience:
"User experience" encompasses all aspects of the end-
user's interaction with the company, its services, and
its products. The first requirement for an exemplary
user experience is to meet the exact needs of the
customer, without fuss or bother. Next comes simplicity
and elegance that produce products that are a joy to
own, a joy to use. True user experience goes far
beyond giving customers what they say they
want, or providing checklist features. In order to
achieve high-quality user experience in a company's
offerings there must be a seamless merging of the
services of multiple disciplines, including engineering,
marketing, graphical and industrial design, and
interface design.

16. THANK YOU
Mallesh.N
HFI Certified Usability Analyst
www.uxmallesh.com