verified solutions
Norman's Four (Design) Principles (derived from other principles) - ANSWER - 1. Functional "visibility"
through an obvious "visible" structure with adequate feedback
2. Design for the intended users (and not yourself)
3. The user must be able to develop good, complete, and unambiguous cognitive (aka conceptual)
model to predict the effects of their actions
4. Design for Errors (and Slips)
1st heuristic of Norman's four: functional "visibility" through an obvious "visible" structure with
adequate feedback - ANSWER - This is also: functional discoverability through obvious
interactive elements and adequate feedback
2nd heuristic of Norman's four: Design for the intended users (and not yourself) - ANSWER - a user may
not know what a developer means with a certain picture
3rd heuristic: simple cognitive models. An example? - ANSWER - the trashcan icon on a mac is a good
example. Users need to be able to make the connection very quickly
4th heuristic: Design for errors and slips - ANSWER - expect and try to eliminate or compensate errors.
Error Type 1 is called a..... - ANSWER - A Slip
What is a slip? - ANSWER - Slips are common users issues
Hand/eye coordination or basic control of our psychomotor systems
, Exacerbated by distraction, speed, attention overload
Unavoidable by design but need to be anticipated and addressed by the designer
"To err is human. To forgive: Design"
For example, pressing the power button when you meant to delete
Error Type 2 is called a..... - ANSWER - Lapse
A lapse is when... - ANSWER - Lapses are induced by inconsistencies or lack of good ease of recall
Can be caused by retro and proactive interference in memories
Common Example: "I forgot your name"
Design Example: NIST's need to "chop" a form
Forgot how to format something in microsoft word.
Error type 3 is called a.. - ANSWER - Mistake
A mistake is when.... - ANSWER - Mistakes are generated by a lack of understanding or a
lack of sufficient or correct information
Lack of sufficient or correct information is the responsibility of the designer in the presentation layer of
an interface
Mistake are often undetectable by the end user
Innovation Ideas come from 4 places. - ANSWER - R&D departments, (Corporate Research which entails
r&d departments)
Research centers, "A cure looking for a disease"
(Like at University of Maryland)
Exposure and Experience