1. Evaluation without Users, Part 2

2. Monday’s Deliverable
As an individual complete the team evaluation sheet.
This gives me a way to check up on how you are doing as a team and try to help out if there are problems before it gets too late.

3. Wednesday’s Deliverable
Submit three copies of:
Detailed scenarios for at least three of your project tasks
“Single page”, labeled, screenshots/paper prototype that corresponds to your scenarios.
Copies of “user profiles” for the users you reference in your scenarios

4. Cognitive Walkthroughs – how and why
Goals
imagine user’s experience
evaluate choice-points in the interface
detect confusing labels, icons, images or options
detect likely user navigation errors
improvement, not defense
Start with a complete TCUID scenario
never try to “wing it” on a walkthrough

5. Cognitive Walkthrough How To - I
Begin by collecting:
An idea of who the users will be and their characteristics
Task description
Description of the interface (a paper prototype)
Written list of the actions to complete the task given the interface (scenario)

6. Cognitive Walkthrough How To - II
For each action in the sequence (scenario)
tell the story of why the user will do it
ask critical questions (4 plus 1)
will the user be trying to produce the effect?
will the user see the correct control?
will the user see that the control produces the desired effect?
will the user understand the feedback to proceed correctly?
will the user select a different control instead?
Every gap is an interface problem

7. Exercise: Cognitive Walkthrough Analysis
Let’s walk through the actions in a couple of scenarios in groups
Form non-project groups of 3-4
Try to:
identify problems
locate alternative widgets/controls
estimate error probabilities (25% intervals)
Discuss / brainstorm with others in your group
Report findings at the end

8. Exercise: Cognitive Walkthrough Analysis
High-fi prototype:
UNI’s Academic Advising and Career Services
Tasks:
Your user is a “typical” UNI student – for the most part, you, but perhaps a little less computer savvy.
Use the site to answer the following questions:
“What can I do with a degree in Computer Science?”
“Where can I learn about writing a resume?”
“Who is hiring computer scientists in this area?”

9. Exercise: Cognitive Walkthrough Analysis
Scenarios:
Provided in a separate handout
Remember the process - at each action step, ask:
will the user be trying to produce the effect?
will the user see the correct control?
will the user see that the control produces the desired effect?
will the user understand the feedback to proceed correctly?
will the user select a different control instead?

10. What did you come up with?