INFO 440 - L17 - November 30
Notes By: Prins, Horm, Fortier, Egaas, and Podhola

** Usability **

What is usability?
    > The effectiveness, efficiency, and satisfaction with which specified users achieve specified goals in particular environments (ISO definition)
    > The degree to which something is easy to use and a good fir for the people who use it (UPA)
    > Making sure that something works well: that a person of average (or even below average) ability and experience cna use the thing for its intended purpose without getting hoplessly frustrated (Steve Krug) DON'T MAKE ME THINK

Conducting a Usability test
    > Who? What? Where? When? Why? How?
        - What to test
        - Why testing
        - Whom to test
        - Where to test
        - When to test
        - Who does the testing
        - How to test
        
Usability Problems Found VS Number of Test Users
    > As you add more and more users, you lear5 less and less.
        - around 5 users, you can find about 85% of usability problems
        - with an extra 10 people, that will only increase 15%
    > Run more tests with few users
        - money
        - users catch more problems a 2nd time

Usability testing techniques
    > Cognitative walkthrough
    > Scenario-Based Testing
    > Think aloud
        - not only say what they are doing, but why
    > Observation
        - in a formal setting, you'd use a camera
    > Interview
    > Eye-tracking
    > Questionnaire for User Satisfaction
    > What else?
        - nothing really...

What to do with the results
    > Report what you observed during the test
    > Report the main problems you found
    > Make recommendations

Usability Tips
    > Keep it simple
    > Be consistent with all participants
        - script
    > Keep your objectives specific
    > Conduct a pilot test to uncover problems
        - Ammy thinks it's important
        - Notify the user how long the study will take
    > Have detailed plan for analyzing the data
    > Let them know that you're testing system and not the user

// end lecture and start "talking" about lab

When you write down who your target users are, go back to your persona to write more about them. Not just "informatics students."

Usability Measures
    1. Learnability (time learning)
    2. Errors (number of misclicks or needing to use back button per test)
    3. Satisfaction
    4. Also look at definition on first slide...

# END #


-- random chat --- (sponsored by "i cant chat under the line" co)
so this is why we convinced David to get a mac.word. he could still do the same thing with a 12 iBook, its not our fault he emptied his piggy bank on it
15" rox
yeah i'm gonna get virtial pc and run onenote, you should, so you could be the lamest person ever.
GOGO virtial PC!! 

--- Crap Chat --- (sponsored by JAMCO America, Inc.)
She's so 1337, she even pronounces "take" as "tech"
LOL
Worst. Lecture. Ever.
Indeed. WOW? LOL...NOT this instant, give Sean a few minutes to boil his Lava Lamp on the stove (http://edition.cnn.com/2004/US/11/30/lava.lamp.death.ap/index.html) only in Washington State.... best. idea. ever.
"Philip Quinn, 24, was found dead in his ***trailer home*** Sunday night by his parents. He is survived by his 14 month old daughter who is also his niece, and his parents, who are also his brother and sister. We weren't sure if we are to list them separately. The church of Latter Day Saints is having a memorial service for Phil later in the week." DUDE! so true. I still want to know how it KILLED him. Big shard in his chest, bled to death, saw it on the news at noon on KING5. Jesus H. Christ. LDS FOR LIFE! The H is for 'Hell'. you're going to hell!
but not glass shard in the chest guy.
I won't be alone.
I know, have you see South Park? Saddam will be there. See ya there! Saddam's in heaven what are you talking about... federal pound me in the ass prision. Which IS heaven for him. dude, that's why I said it! I bet you $5 Saddam is a mormon.
Well it is the correct answer.
Learnability by Ammy: "leerrbly"
Ammy on Aaron's lab turn in: GREEAGHTTHTT JEEEEORBBBB! Now time to focus on cauhniwatoo
2. [Trade] WTS 8slot bag, 13.5s, PST
Dammit dan
Damn, that eliminates Ammy.
hahaha lol
JEEEORBBB! 
See the new SB email? He got a new computer, Lappy 486.
really? rad.
yeah, he's trying to sell his old one as "Slightly shotgunned"
SEAN... GET YOUR FUCKINIG ASCII ON
speaking of.... http://img40.exs.cx/my.php?loc=img40&image=feuerfreimovie.swf (turn sound off)
The lecture online isnt up to date with this version... yup
WTF did she just say??  Listen to how she says cognitive walkthrough
cauhniwatoo
WTB cauhniwatoo 2.5s, PST

I took the box my iMac came in and wrapped it and put it under the tree today.
Big ass boxes with my name on them RULE
that's sad in so many ways... ok, just one, but it's really sad.
you're just jealous that we have a xmas tree and we have gifts under them already.
yeah if you want an empty box for christmas <--exactly. asses++;.
GAWD. Just get me some chap stick!
BUT MY LIPS HURT REAL BAD! GOD... IDIOT!
She can't say much of anything... I don't know why she stopped with sophisticated.
A SHOT GUN, WHAT ELSE?