IST 402 Quiz 2 Flashcards
consists of the shapes terms and groupings that are used in a regular and consistent fashion to express system features
visual language
a user interface technique in which visual features are used to code different attributes of data
information visualization
to pursue a task with computer support a user must translate their real world goal into a software oriented goal
system goal
users goal task is mapped easily onto an appropriate system feature
high semantic directness
built from objects and actions that are direct analogs of objects and actions in the real world
direct manipulation user interface
consists of a vocabulary and composition rules used to identify and manipulate task objects indirectly
command language
evoked by perceptually salient or engaging elements in the user interface display
opportunistic behavior
the steps needed to achieve a system goal
action plan
organizing several interrelated bits of information into a single unit
chunking
the cognitive dissonance between what is displayed on the screen and the users mental representation of task objections and goals
gulf of evaluation
the distance between a users current task goals and the procedures and actions that the system provides for pursuing these goals
gulf of execution
principles that describe the configural properties of visual information
gestalt perception
aspect of an object that makes it obvious how the object is to be used
affordance
set of visual design features that are used to create consistent displays
visual design patterns
what is learned once can be applied to new similar cases
transference of learning
consistent use of language and visual characteristics within an application
internal consistency
the use of design programs across different systems or applications
external consistency
set of concepts relationships and representations that are developed to help users make sense of large data sets and complex functionality
information model
combines a large overview of an information model with local expansion of the portion of the model currently in focus
fish eye technique
the semantic attributes of each data point determine its visual representation
semantic filtering
when prior knowledge leads users to do the wrong thing
interference
a restricted interaction state where only certain actions are possible
mode
the mapping of physical movement with a device to a tasks input requirements
articulatory directness
sometimes used to refer to the physical behaviors required by a user interface
pragmatics
the system generated information that lets users know that their input is being processed or that a result has been produced
feedback
the system generated information that lets users know that their input is being processed or that a result has been produced
feedback
a concrete but partial implementation of a system design
prototype
where one or more sketched or computer-drawn pictures are used to explore specific scenarios
storyboard technique
representative users are asked to interact with the system prototypes and their behavior and subjective reactions are studied
usability testing
prototype that includes enough programming logic to move participants through a predefined sequence of displays
scenario machine
an approach to software design and development that moves through analysis, design, development, and testing
evolutionary development
