Post on 16-Dec-2015
Cognitive WalkthroughExampleDr. Philip
Craiger
Human - Computer Interaction
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CW Through GENISYS
USERS New to GENISYS system Unfamiliar with text-based interfaces Some experience with GUIs Some experience using GUI-based
search systems at other libraries.
Based on this simple description, what general problems can you foresee?
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CW Through GENISYS
TASK: Search for “Handbook of GUI”, and
print information on the book TASK ANALYSIS (high level description):
1. Logon GENISYS system2. Search for book using keyword search3. Find book in list of results4. Print information for later use5. Exit the system
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CW Through GENISYS
Logon to GENISYS System Success story: Directions clearly indicate
user is to type in “genisys” at login:
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User enters into catalog Criterion: Will users know an action is
available? That is, that hitting the “G” key is associated
with going to GENISYS catalog Failure: users aren’t familiar with using
keystrokes to invoke commands. “Choose one” isn’t descriptive. Users may try to find mouse (there aren’t any!) to click on the “G”
Fix?
CW Through GENISYS
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User searches for book using keyword “GUI” Criterion: Will user notice that the correct
action is available? Failure story: User is familiar with using buttons
to initiate commands. GENISYS requires using the [return] key. Also, instructions for using the key are not in proximity to search. Users may not read entire screen and therefore not see the instructions.
Fix?
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Label-Following?
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User finds book and selects it from list for review. User hits the “4” key. Success story: If users have gotten
this far it suggests they now understand how to initiate actions using keystrokes. Also instruction “Please type number of item you want to see” is fairly clear.
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I want to print this!!! HOW???
CW Through GENISYS
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CW Through GENISYSUser prints information on book. Criterion: Will the user notice that the
correct action is available? Failure story: There is nothing on the
interface that indicates that printing is possible from that page.
Criterion: Will user associate correct action with that trying to be achieved?
Failure story: Only print indicator is on prior page. However, this doesn’t print all necessary information for the relevant book
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Pops up when clicking “+”: Additional Options
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What’s an e-mail printer?
What’s an attached printer?
What does “generic” meanin this context?
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CW Through GENISYS
Given user got to this point, selects the option to print to a local printer. Criterion: Will user associate the correct
action with the effect trying to be achieved? Failure story: Labels aren’t descriptive, and
are confusing to novices. There is no clear indication as to which option is associated with the local printer.
FIX?
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CW Through GENISYS
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User selects “attached printer” through trial-and-error. Criterion: If the correct action is
performed, will the user see the progress being made toward the goal?
Failure story: No feedback given as to whether the information is printing. Only a duplication of the previous screen.
FIX?
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CW Through GENISYS
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CW Through GENISYSBecause user saw no feedback, now selects “e-mail printer” option. Criterion: If the correct action is
performed, will the user see that progress is being made toward the goal?
Failure story: No feedback is given after the submitting the e-mail printer option. In fact, the user can type nonsense into the e-mail address request, and no feedback.
FIX?
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CW Through GENISYS
How do I get out of here?
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User exits the system Criterion: Will the user notice that
correct action is available? Failure story: No, there is no indication
as to how to exit the system from this point. Only indication is 3 levels higher. Would have had to have retained that information in memory (LTM). Not likely.
FIX?