Karteikarten
HumanComputerINteractionAMIA22
Karten in diesem Stapel (40)
- 1name the predominate model for HCIGOMS = goals, operators, methods and Selection
used to benchmark / compare efficiency of interfaces and estimate cost savings associate with increased user performance - 2describe the Hick-Hyman Lawuser response time (RT) is function of # of possible responses --> hierarchical menus, finding correct option
RT = b*log2(n) - 3What is Keystroke-level model (KLM)GOMS model looking at keystrokes =
time to task completion = Sum of keystroking + piinting+ homing+ drawing+mental operation(thinking)+system response operator (waiting)--> use this to determine what is most amenable to short cut or hot key! - 4what is Fitt's law?time to track to an object with a cursor is a function ( Index of difficulty (ID)) of distance (D) traveled and (w) width of target
ID = log2(2D/W) - 5What is Buxtons Three State Model of Graphical input?Descriptive model for HCI -exhaustive description of states and transitions of using a mouse
- 6WHat is the descriptive model called Guiards model of bimanual skill?hands are not used equally= left handed folks have trouble with modern 101 keyboards, certain keys are only on left side (ie esc, ctrl, tab, fn) putting left handed people at disadvantage
acknowledge buttons are on right resulting in more mouse travel and erros for lefties - 7What are the three major categories of usability evaluationTesting
Inspection
Inquiry - 8Name 4 techniques for Testing system usability ?Coaching
Thinking aloud
Eye-tracking
performance measurement - 9what are 2 inspection useability techniques?cognitive walkthrough
Heuristic evlauation - 10what are inquiry methods of evaluation of user interactionfield observation
focus groups/interviews
surveys
usage logs - 11what is the coaching method of usability testing good for identifying?training and documentation needs
- 12name examples of performance measurements in usability testing?Task completion time/rate
Recovery rate when making misteps
Failure rates - unable to complete task
frequent and never used features
which pathway on multi possible pathways do users chose and why - 13what is the Nasa Task Load index (NASA -TLX)survey, 6 domains, 7 point scale each
Mental demand, physical demand, temporal demand, performance, effort and frustration level - 14what is Discount Usability EngineeringHCI evaluation that does not require large # of people, or big budget described by Jakob Neilsen
5 testers- modified testing and inspection
modified thinkalout , heuristic,
low fidelity prototypes -rapid iterations - 15What are Wireframes/low fidelity protoytpe and why are they good?can gather feedback without actually coding the app. low cost to identify errors, can be paper based
- 16The formal definition of Wireframe?prototype used to suggest basic structure of a user interface and relationship btw pages, focuses on user, not programming and can act as blueprint for design
- 17what is NIST 2012 Usability evaluation recommendations?1) EHR Application Analysis
2) EHR User interface Expert review
3) User Interface Validation Test - 18What is cognitive informatics?study of human processing in healthcare decision making -
National Center for Cognitive Informatics and Decision MAking in Healthcare - UT - 19Name the software that is used for UseabilityTURF
- 20What are Safety Enhanced Design BriefsDesign guidelines fro ehr use cases --> effective color, table design, reducing wrong patient selection errors, results management, medicationa and allergy lists, cds, eprescribing, medication/problem reconcillation, CPOE
- 21Who is Edward Tufte ?writes about the visual display of information - i.e. quantitative information,
- 22What is data visualization?field that deals with graphical representation of data and information
- 23What is the take-away of data visualization?How you represent data can influence how you perceive and comprehend data - change from cognitive to visual perception task
- 24List the type of visualizations ?sparkline, sankey diagram, heat map, mekko chart, treemap, geospatial and small multiples
- 25what type of diagram is thissparkline = small line chart without axes, to show trends usually
- 26what is this diagram typeSankey Diagram - flow chart in which width of the lines conveys information about amount and branches indicate additive/subtractive events
- 27what is this type of visualizationHeat MAp - saturation conveys content of variable overlaid on table, map or chart
- 28What is this type of diagram?MEKKO Chart - barchart where both axis encode an attribute (width of bar and height of bar each have meaning
- 29What is this type of diagramTreeMap - shows relationship btw parts to a who as a series of grouped boxes
- 30what is this type of diagramGeospatial map - tabular data is visualized on a map
- 31what is this type of diagram ?small multiples - Tufte invented, - comparison btw small data visualizations
- 32as opposed to the real world, aMental Model is?clinicians understanding of a real world concept and how it influences reality, actions, and choices
- 33where does the IT world fit with the real world and their mental model?it sits int he middle of the two
- 34What does Koppel think leads to useability errors?Attributed to mismatch between the three models - Real Wold, IT, and Mental Model
- 35What is a Type 1 error in koppels usabilty error theory?IT is too course - i..e not enough codes for correct granularity
- 36what is type 2 err in koppels usability error theory?IT is too fine - i.e. ICD 11 is too granular , more than the mental model
- 37What is a type III error in Koppels USability error theory?IT systems to account for reality - i.e. no wifi where computer is to do data entry
- 38What is a type IV usability error in Koppels theory?Conflicting mental models - primary care and specialist think about a disease differently
- 39What is a Type V error in koppel's usability error theory?mental model based on false reality as represented by the IT system - vital signs are artifactual but added to the EHR automatically
- 40what is the purpose of a situation awareness of a projection display ( instead of alert )?take unstructured data--> find, sort, integrate, and process data to increase comprehension of the their meaning
PErception --> comprehend --> project future status
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- Board Exam HealthInformationSystems Karteikarten am HumanComputerINteractionAMIA22, erstellt von Michael Riben am 06/10/2022.
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- Michael Riben
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