CHAPTER 12: COGNITIVE MODELS Flashcards
approximation of one or more cognitive process in human or other animals for purpose of comprehension and prediction.
Cognitive model
can predict legal behvaior sequences without reference whether they could be executed by user.
Competence model
do not describe what the necessary behaviour sequence are.
Performance model
GOMS model
Goals, Operators, Methods, Selection
what the user want to achieve
Goals
lowest level of analysis (ex: hardware)
Operators
goal decomposition
Methods
selecting
Selection
introduced by Kieras and Polson [199], begins with the basic premises of goal decomposition from GOMS and enriches the model to provide more predictive power.
Cognitive Complexity Theory
the production rules are sequence of rules.
Cognitive Complexity Theory
the size of description for even a part an interface can be enormous.
Cognitive Complexity Theory
several ways of representing the same user behaviour and interface behaviour, yielding different measure and dissonance.
Cognitive Complexity Theory
how the user understand the language.
Linguistic and Grammatical
rules to describe the dialog grammar.
Backus-Naur Form
has been used widely to specify the syntax of computer programming languages, and many system dialogs can be described easily using BNF rules.
Backus-Naur Form
attempts to deal with some of these problems by including elements such as parametrized grammar rules to emphasize consistency and encoding the user’s world knowledge.
Task-Action Grammar
was designed to reveal just this source of consistency.
Task-Action Grammar
devices that we must use to interact.
Physical and Device model
human motor system is well understood as a basis for detailed prediction about user performance.
Keystroke-level model
of the task, when the user builds a mental representation of the task.
acquisition
of the task using the systems facilities.
execution
a simple model of input devices developed by Buxton.
Three-state model
mouse, light-pen with button, and touchscreen
Three-state model
example of Three-state model
mouse, light-pen with button, and touchscreen