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What will be covered
•The What? and Why? of usability testing
•How to prepare, conduct, and analyze a test
•Examples of usability testing at NJP
A bit about me
What is usability?U
sab
ility is a q
uality a
ttribu
te
that a
ssesse
s how
easy u
ser
inte
rface
s are
to u
se. T
he w
ord
"u
sab
ility" also
refe
rs to m
eth
od
s fo
r imp
rovin
g e
ase
-of-u
se d
urin
g
the d
esig
n p
roce
ss.
Usability is a quality attribute that assesses how
easy user interfaces are to use. The word "usability" also
refers to methods for improving
ease-of-use during the design process.
Source: http://www.useit.com/alertbox/20030825.html
Dr. Jakob Nielsen
What is usability?Five components:
• Learnability
• Efficiency
• Memorability
• Errors
• Satisfaction
Source: http://www.useit.com/alertbox/20030825.html
What is usability testing?
Research technique for evaluating the usability of a product
using real users doing real tasks
Why is it important?
Get user feedback and determine satisfaction
Promotes user-friendliness
Catch problems before launch
How do you get started?
The Process
Preparation
Product Prototype
Users/Testers
Preparation
Tasks/What are you testing?
Recording Devices
Preparation at NJP
IKE Site Prototype
Legal Assis-tants
4CLEAR
Attorneys3
Attorney1
Users/Testers
Preparation at NJP
•What was tested? IKE Library
Browse & Search
Functions
Document Uploads
Tagging
Preparation at NJPTasks:1) Upload a document you would like to share with your colleagues to the IKE Library.
2) Think of a case or project you recently worked on that required you to look for a document in the network drives, ARC, and/or
Intranet. Show how you would look for such a document on IKE.
Preparation at NJP
Learnability
Efficiency
Memorability
Errors
Satisfaction
Preparation at NJP
Learnability
Efficiency
Memorability
Errors
Satisfaction
Test Administration
* Introduce test* Testing product, not
user* User to ‘talk aloud’
* Read task to user* Ask tester to tell you
when they think they’ve completed the task
* Observe and take notes
Test Administration
* Stand or sit next to tester
* Try to have two moderators* More and less note-
taking
* After test, ask about impressions
Analyzing Results
Quantitative Data Qualitative Data
Analyzing Results w/ Affinity Diagram
1.Write down all qualitative data (comments, questions, etc.) on sticky notes
Analyzing Results w/ Affinity Diagram
2. Arrange notes into clusters on wall based on common themes
Analyzing Results w/ Affinity Diagram
Analyzing Results
Analyzing Results
Rate severity of issues raised
* How frequently issue was encountered
* How much it could affect priority tasks to be done in IKE
Analyzing Results
0
1
2
3
4
5
6
7
8
9
Visibility Issues
ISSUE
# O
F C
OM
ME
NT
S
Severe Moderate/Severe
Severe
Analyzing Results
Influence on Design
Discover where and what changes should be made
Influence on Design of IKE
0
1
2
3
4
5
6
7
8
9
Visibility Issues
ISSUE
# O
F C
OM
ME
NT
S
Severe
Influence on Design of IKE
The Process
Thank You
This call will be archived here: http://lsntap.org/
Resources/Referenceshttp://www.useit.com/jakob/
http://www.usability.gov/methods/test_refine/learnusa/
http://www.alistapart.com/articles/usability-testing-demystified/
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