Flashcards
Human computer interface
Cards in this deck (20)
- 1what is human computer interaction?study of computers and people
- 2how does HCI apply to healthcare?increasing awareness of HCI and medical errors, cognitive overlad, alert fatigue, grand challenge in CDS
- 3what are examples of usability related erros?wrong patient, wrong mode of action, inaccurate data display, incomplete data display, non-standard measurements, reliance on user recall, inadequate feedback, corrupted data storage
- 4what is the Hick-hyman law?user response time in function of number of possible responses
RT= a+b*log2(N) - 5what is keystroke-level model?time to task completion is sum of time spent keystroking, pointing, homing drawing , mental operator, thinking, system response operator, waiting
- 6what is the keystroke level model used for?identify functions for shortcuts and hotkeys
- 7what is Buxton's three state model of graphical input?description of states and transitions involved in moving a mouse: out of range, tracking, and dragging
- 8what is Guiards model of bimanuel skill?hands used unevenly, each hand has distinct roles, why left handed users are not served well by 101 key keyboards
- 9what are three major categories of usabilty evaluation?Testing, inspection and inquirey
- 10What are examples of uability testing?coaching, thinking aloud, eye-tracking /click tracking, and performance
- 11What are 2 methods of inspection for HCI?Cognitive walkthrough and Heuristic evaluation
- 12what are HCI inquiry methods?field observation, focus groups, surveys, and usage logs
- 13what is the coaching method of usability testing?user asked to complet a task and ask question they want to an expert coach, coach keeps track of the questions
- 14what is "think -aloud usabilty testingUser attempts to complete a task and speaks aloud each step of task articulating difficulties , confusion or realizations
- 15what is eyetracking or click tracking ?electroinic or manual measurement of use , with heat map of an interface
- 16what is performance measurements?measure performance of users (5-8) of task completion time, recovery rate, failure rate, frequency of functions used, ways users performed a task etc
- 17what is a cognitive walkthrough?use low-fidelity paper models or wireframes
- 18what is heuristic evlauation?use design principles or "rules of thumb " to critique a user interface i.e. Jakob Nielsens list
- 19what is Discount Usabilty engineering ?decreased users testing by jakob Nielson with modified testing and inspection
- 20what are the NIST 2012 recommendation sfor testing?3 step
1)EHR app analysis
2) EHR user interface review with heuristics
3) user interface validation test
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- Board Exam HealthInformationSystems Flashcards on Human computer interface, created by Michael Riben on 10/10/2013.
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- Michael Riben
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