A workshop to equip non design roles with tools designers use for testing quality of designs.
In the absence of a dedicated designer on a project, teams are left with no option but to take a leap of faith where it comes to the quality of usability of a product or feature. As a result although you may deliver great quality code and a feature set net value to the end user and thereby your customer is in question.
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ASSESSING THE QUALITY OF USABILTY
1. v o d Q A
ASSESSING THE QUALITY OF USABILITY
Equipping non design roles with the tools
designers use for testing quality of designs.
2. 2
10 HEURISTICS OF USABILITY
Getting introduced to the basic principals of usability and there by making an
educated estimate of the designs usability.
3. WHAT IS HEURISTIC EVALUATION?
Heuristic evaluation involves having a small set of evaluators examine the
interface and judge its compliance with recognised usability principles. âš
- Jacob Nielsen, 1994
3
4. WHAT ARE THE 10 HEURISTICS?
Visibility of system status
The system should always keep users informed about what is going on, through appropriate feedback within reasonable
time.
4
5. WHAT ARE THE 10 HEURISTICS?
Match between system and the real world
The system should speak the users' language, with words, phrases and concepts familiar to the user, rather than system-
oriented terms. Follow real-world conventions, making information appear in a natural and logical order.
5
6. WHAT ARE THE 10 HEURISTICS?
User control and freedom
Users often choose system functions by mistake and will need a clearly marked "emergency exit" to leave the unwanted
state without having to go through an extended dialogue. Support undo and redo.
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7. WHAT ARE THE 10 HEURISTICS?
Consistency and standards
Users should not have to wonder whether diïŹerent words, situations, or actions mean the same thing. Follow platform
conventions.
7
8. WHAT ARE THE 10 HEURISTICS?
Error prevention
Even better than good error messages is a careful design which prevents a problem from occurring in the ïŹrst place.
Either eliminate error-prone conditions or check for them and present users with a conïŹrmation option before they
commit to the action.
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9. WHAT ARE THE 10 HEURISTICS?
Recognition rather than recall
Minimize the user's memory load by making objects, actions, and options visible. The user should not have to remember
information from one part of the dialogue to another. Instructions for use of the system should be visible or easily
retrievable whenever appropriate.
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10. WHAT ARE THE 10 HEURISTICS?
Flexibility and eïŹciency of use
Accelerators -- unseen by the novice user -- may often speed up the interaction for the expert user such that the system
can cater to both inexperienced and experienced users. Allow users to tailor frequent actions.
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11. WHAT ARE THE 10 HEURISTICS?
Aesthetic and minimalist design
Dialogues should not contain information which is irrelevant or rarely needed. Every extra unit of information in a
dialogue competes with the relevant units of information and diminishes their relative visibility.
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12. WHAT ARE THE 10 HEURISTICS?
Help users recognize, diagnose, and recover from errors
Error messages should be expressed in plain language (no codes), precisely indicate the problem, and constructively
suggest a solution.
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13. WHAT ARE THE 10 HEURISTICS?
Help and documentation
Even though it is better if the system can be used without documentation, it may be necessary to provide help and
documentation. Any such information should be easy to search, focused on the user's task, list concrete steps to be
carried out, and not be too large.
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14. NOW TRY IT YOUR SELF!
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15. USABILITY TESTING
15
The ability to observe actual user behaviour while interacting with a system,
deriving a usability report based on actual facts unlike assumptions.
24. WHAT IS USABILITY TESTING?
Usability testing is a technique used in user-centered interaction design to
evaluate a product by testing it on users. This can be seen as an
irreplaceable usability practice, since it gives direct input on how real users
use the system.
- Jacob Nielsen, 1994
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25. SETTING UP AN ENVIRONMENT FOR USABILITY TESTINGâŠ
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28. SETTING UP AN ENVIRONMENT FOR USABILITY TESTINGâŠ
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29. CONDUCTING A USABILITY TEST
Knowing what to test and what to ask:
âąTest key functions the product is oïŹering.
âąRather than asking questions assign tasks in very simple and clear manner.
!
Selecting users for the test:
âąA diverse sample of users is necessary.
âąSampling around 4 to 5 people is suïŹcient.
!
Actors in the test:
âąA conductor who asks all the questions
âąAn observer who just makes observations and takes notes
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30. BUILDING A TEST SCENARIO
!
Performance matrices
âąCompletion rates
âąTime on task
âąErrors
âąSatisfactions
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PAGE TASK EXPECTED ACTION EXPECTED TIME TIME TAKEN COMPLETION
Portfolio What is this page about? Portfolio < 8 seconds
What does the graph indicate? Portfolio summary < 8 seconds
How would you see your
annual investment graph?
Click on â1yâ < 5 seconds
Where would you ïŹnd your
mutual investments?
Click on âš
âMutual Fundsâ
< 5 seconds
32. TEST ANALYSIS REPORT
32
PAGE TASK EXPECTED ACTION EXPECTED TIME TIME TAKEN COMPLETION
Portfolio What is this page about? Portfolio < 8 seconds 10 sec
What does the graph indicate? Portfolio summary < 8 seconds 6 sec
How would you see your
annual investment graph?
Click on â1yâ < 5 seconds 5 sec
Where would you ïŹnd your
mutual investments?
Click on âš
âMutual Fundsâ
< 5 seconds 3 sec
PAGE TASK EXPECTED ACTION EXPECTED TIME TIME TAKEN COMPLETION
Portfolio What is this page about? Portfolio < 8 seconds 9 sec
What does the graph indicate? Portfolio summary < 8 seconds 7 sec
How would you see your
annual investment graph?
Click on â1yâ < 5 seconds 4 sec
Where would you ïŹnd your
mutual investments?
Click on âš
âMutual Fundsâ
< 5 seconds 4 sec
User 1
User âŠ
33. TEST ANALYSIS REPORT
33
PAGE TASK EXPECTED ACTION EXPECTED TIME TIME TAKEN COMPLETION
Portfolio What is this page about? Portfolio < 8 seconds 10 sec
What does the graph indicate? Portfolio summary < 8 seconds 6 sec
How would you see your annual investment
graph?
Click on â1yâ < 5 seconds 5 sec
Where would you ïŹnd your mutual
investments?
Click on âš
âMutual Fundsâ
< 5 seconds 3 sec
Average ïŹndings User 1 - User N
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