4. Who am I
Yael Keren
BSc. Industrial Engineering & Management
Business analyst & Production planner @ HP Indigo
Software Developer @ SAP
MSc. Human Factors Eng. (Human Computer Interaction)
Usability Researcher @ Deutche Telekom Labs
UX Consultant @ Aman UI & Design
UX Architect @ HP Software
7. A user will be happy when…
The system helps the user finish his task
quickly without errors
• He feels in control
• He understands how to do what he wants to do
• He does not have to think to much
• No memory/visual load on the user
• He does not make errors
8. User Centered Design
User Centered Design is a development methodology that
focuses on the real needs of the user throughout the
development process.
9. User Centered Design
“What functionality should the app provide?”
“Which user goals should this app support?”
“What features are we able to add?”
“What is Alice’s primary goal in this scenario?”
“Someone may want to…”
“How important is it for Alice to…?”
10. What is UX
User experience (UX) is how a person feels when
interfacing with a system.
16. Some interesting findings
8% are color blind
• Color should not be the only indication
For all population –
• Good contrasts
• Readable fonts (San serif)
• Large enough fonts
• Consider lighting
17. Some interesting findings
Short term memory = 7 +- 2 items
• Recognition instead of recall
• Use categories
• Few items in menu dropdowns
• Few icons
• Reduce memory load
18. Some interesting findings
• Aesthetics matter!
• Users do not change the default options
Reaction times
• Up to 0.1 sec – No need for feedback
• Up to 1 sec – Slight delay but attention is not affected
• Up to 10 sec – Must act to keep user’s attention
• More than 10 sec – User will give up
21. Task Analysis
Research
• Who are the users? (personas)
• Computer experience?
• Expert/Incidental users?
• What are their goals?
• What are their tasks?
• How frequently do they perform each task?
• What is the workflow?
Observe the users!
22. Task Analysis
"If I'd asked my customers what they
wanted, they'd have said a faster horse…"
Henry Ford
23. We are not the users!
70% more users left the site after getting the new tab
24. Task Analysis - Example
Task Frequency (1-4)
View objectives and KPI 1
View the overtime trend 2
View formula 3
View threshold values 3
Change settings 4
In XS:
28. Keep in Mind
• Does it support the main use cases?
• Time to complete the main tasks?
• Prioritize (80-20) according to frequency of use
29. Prioritization (80-20)
We best support the actions that the user performs 80% of the time
Task Frequency
(1-4)
View objectives and KPI 1
View the overtime trend 2
View formula 3
View threshold values 3
Change settings 4
1
2 3
31. Validation
• Usability tests
• A/B testing
• User observations
• Think aloud
• Eye tracking
• Focus groups
• Surveys
• Forum discussions
• Expert review
32. Validation goals
• How customers use the system (workflows)
• Who are the actual users
• What is their purpose of using the system
• Which components are used
• Which components are not used (why?)
• What is the frequency of use
• Unclear processes/elements/components
• What customers believe would help them perform their
work better
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47. What we discussed today
• Hi, I am Yael
• What makes a good user experience
• What does the user really need?
• Things to watch out for in XS
48.
49. Some interesting findings
Gestalt
• Proximity – Objects that are close to each other are
perceived as a group
• Similarity - Objects that are similar to each other are
perceived as a group
• Closure – Objects (shapes, letters, pictures, etc.) that
are not complete are still perceived as being whole.
• Symmetry - The mind perceives objects as being
symmetrical and forming around a center point
