3. 3
Usability testing answers questions, so we have to
understand the question we are asking
If we want to know:
Which ballot design helps voters be more accurate?
We are asking a question that is
Comparative, quantitative (errors, time)
(and why they made those mistakes)
If we want to know:
Do voters understand how to mark their ballot?
We are asking a question that is abut
Mental models, variability, qualitative insights
(and how prevalent each model is)
4. 4
Helpful models for thinking about usability
A’s Ability, aptitude, attitude
(what voters bring to the election)
E’s Efficient, effective, engaging, error-tolerant, easy to learn
(dimensions of usability)
Use Useful, usable (operable), desirable
(how we define success)
5. 5
The recipe for planning a usability test
Location and context: formal informal
Recruiting: defined opportunistic
Activities: instructed tasks free tasks
Questions: structured unstructured
Data collection: observation task/data only
Results quantitative qualitative
7. 7
Which instructions work better?
Traditional ballot instructions vs. plain language version
About this project
45 participants
3 lab setting, 8 days
2 moderators
Instructions for voting
Careful observation
Satisfaction survey
We learned about
Voter accuracy
Order effects
Voter preference
Results
Statistical analysis
Participant preference
8. 8
Which layout works better?
Left aligned vs. right aligned names?
About this project
100 participants
2 locations, 1 day
4 moderators + 6 others
Instructions for voting
Minimal observation
We learned about
Voter preference
Time to vote
Number of errors
Results
Statistical analysis of marked
ballots
9. 9
What do voters do with unusual options?
How do voters react to “double-vote” options?
About this project
200 participants
5 locations, 1 day
12 moderators + 5 others
Self-defined tasks
Minimal observation
We learned about
Voter awareness of party
Types of marks and errors
Need for voter ed.
Results
Inspection of ballots for
marking patterns
10. 10
What problems might voters have with a new ballot?
What problems might voters have with a new ballot design?
About this project
1 of 5 similar tests
10 participants
1 locations, 1 day
2 moderators + 1 others
Self-defined tasks
Observation
Post-task questionnaire
We learned about
Navigation on the ballot
Instructions
Results
Found pattern of errors for
one interaction
Time on task
11. 11
What do voters think about different systems?
Which accessible voting system do voters prefer?
About this project
496 surveys; multi-disabilit
11 systems
Multiday “voting fair”
They learned about
Voter assessment of usability
Voter comments about
accessibility
Differences by disability
Results
Statistical analysis survey
results
Qualitative analysis of
comments
12. 12
Do voters understand how their votes are counted?
Can voters explain and act on that understanding?
About this project
20 participants
4 locations, 1 day
8 moderators
Self-defined tasks
Minimal observation
We learned about
Navigation on the ballot
Instructions
Mental models of counting
Whether there’s a problem
Results
Qualitative insights
13. 13
Do voters understand a new voting system?
What is their reaction to new procedures?
About this project
Focus group
Mock election
1 moderators
They learned about
Attitudes and reactions
Results
Qualitative insights
On April 4th, 2005, citizens with disabilities from all over the state tested voting systems and completed surveys documenting their reactions to each system. A total of 496 surveys were completed.The survey results on the following page will be one of several factors used to help the Oregon Secretary of State decide which voting system or systems to purchase to give citizens with disabilities the opportunity to vote privately and independently. Survey was a modified SUS – 12 questionsI would like to use this voting system in an election. There were too many steps in using this voting system.I thought this voting system was easy to use. The instructions for this voting system were difficult to understand. The buttons or touch screen were easy to use. It was hard to move around the ballot with this system. I think that most people could learn to use this voting system very quickly.I found this voting system awkward or difficult to use. I felt very confident that my vote was cast correctly with this voting system. I would need help each time I used this voting system. The ballot text was easy to read or hear. Casting my vote was easy.