Intro Flashcards
Human Factors
The science of understanding the properties of human capability and limitations, and applying this understanding to the design, development, and deployment of systems and services
Affordances
Idea that certain things look as if you’re supposed to use them in a certain way
Validity
The degree to which an experiment, a procedure, or a measurement represents what it is supposed to represent
Reliability
The consistency of measurements
Research Methods
Types:
Descriptive
Correlational and Differential
Experimental
Experimental designs
Basic designs:
Between subjects
Within subjects
Three Principles of Usability/User-centered Design
An early focus on the users and their tasks Empirical measurement of product usage Iterative design, in which a product is Designed Tested Modified
Norman’s 7 principles
Knowledge in the World + Head Simplify the Structure of Tasks Make Things Visible Get the Mapping Right Exploit the Power of Constraints Design for Error Standardize
Feedback
Letting the user know they have interacted with the system
Gulf of Execution
How well the user can work the system to use it correctly
Gulf of Evaluation
How well the user can understand the system to doing what they want it too
Constraints
can be used to prevent error
Front End Analysis
Before any design solutions are generated, answer the following:
Who are the system users?
What are the major functions of the system?
What are the environmental conditions?
What are user preferences and requirements?
User Analysis
Who is the User? Characteristics, development personas
Function Analysis
Functions represent a general goal, not the actual tasks
