CSCE3220 - Final Flashcards
What is the main advantage of using the ‘Think Aloud’ protocol in a usability test?
It informs the understanding of the user’s mental model
Fitt’s Law models the difficulty of selecting graphical objects in an interface based on the assumption that
Different pointing devices have different timing constants
Several usability measures can be collected while observing users interacting with a computer system including
Number of user errors
An evaluation technique that is more realistic than other methods
Observation
An evaluation method that does not require human participants serving as test users is the
Controlled experiment
Hicks law states that Reaction Time will increase logarithmically as the:
The number of response choices increases
In a formal experiment
Objective measurements are made
The best evaluation technique to use in the early stages of application development is
Collecting user opinions
The Wizard of Oz technique is used to describe and evaluation technique that
Simulating machine behavior with human operators
T/F: Fitts’ Law helps to quantify usability of menu structures in direct manipulation interfaces
TRUE
T/F: In pervasive computing the interface is situated in the environment without the user realizing this
TRUE
T/F:You can do a heuristic evaluation using a prototype, even before the system is built
TRUE
T/F: A vertical prototype includes the entire user interface with no underlying functionality
FALSE
vertical builds small set with full functionality
T/F: A low-fidelity prototype is really just a bunch of drawings.
TRUE
Name the two axis for a group ware diagram
Time and Space
Name the 4 subcomponents
Different/Same time
Co-located/remote
Name a co-located and same time example
face to face conversation
Name a co-located and different time example
bulletin board
name a remote and same time example
phone call
name a remote and different time example
attributes of visual variables 7
Position Size Shape Orientation Texture Value Color
characteristics of visual variables 3
Nominal
Quantitative
Order
Position always ranks ____
high
categorical data use
Position
Color
Texture
Shape
quantitative data use
position and size
