Tag: usability

Nursing Informatics

Usability Tests (Reading & Sharing Cont.)

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  • Heuristic Evaluation or Heuristic Inspection Methods
    • the most popular of what are called “discount usability evaluation”
      • because they are typically easy to do, involve fewer than 10 experts, and are much less expensive than other methods.
    • the objective is to detect problems early in the design process, when they can be most easily and economically corrected.
    • they are called “heuristic” because evaluators assess the degree to which the design complies with recognized usability rules of thumb or principles, such as those proposed by Nielsen (1994) (retrieved from https://www.nngroup.com/articles/ten-usability-heuristics/)
      1. visibility of system status
      2. match between system and the real world
      3. user control and freedom
      4. consistency and standards
      5. error prevention
      6. recognition rather than recall
      7. flexibility and efficiency of use
      8. asthetic and minimalist design
      9. help users recognize, diagnose, and recover from errors
      10. help and documentation

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Nursing Informatics

Usability Testing (Reading & Sharing)

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Usability: deals with specific issues of human performance during computer interactions for specific tasks within a particular contest.

  • refers to how well the information system product was designed for users to learn as well as to use.
  • refers to how the system allows users to carry out their tasks safely, effectively, and pleasantly.
  • is related to the human-centered design that is characterized by the active involvement of users and the clear understanding of user and task requirements

Usability testing: creating realistic clinical scenarios to which end users are asked to apply configured electronic tools, using the hardware that will be used in production.

The usability of a system can be measured by:

  • Effectiveness (can users successfully achieve their objectives?)
  • Efficiency (how much effort and resource are expended in achieving those objectives?)
  • Satisfaction (was the experience considered satisfactory?)

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Nursing Informatics

Usability: Ease of Use, Ease of Learning, Satisfaction with Using, Efficiency of Use, Error Tolerance, and Fit of the system to the Task

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Usability: a key factor in choosing software for a computer system is the software’s usability. Usability of a new human-technology interface needs to be evaluated early and often throughout its development.

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Nursing Informatics

Nursing Informatics Terminology Self Study: usability, ergonomics, change theory

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Usability studies can be used to support IT in a number of ways. Which of the following are reasons to complete these studies in a health care setting? –assesses the adequacy of a design or redesign early in the systems life cycle, helps determine or clarify users’ requirements determination

Usability: the ease with which people can use an interface to achieve a particular goal. issue of human performance during computer interactions for specific tasks within a particular context. which deals with specific issues of human performance during computer interactions for specific tasks within a particular context. usability issues address the efficiency and effectiveness of an application. For example:

  • the ease of learning an application
  • the ease of using an application
  • satisfaction with using
  • efficiency of use
  • error tolerance
  • fit of the system to the task
    • the speed of task completion and errors that occurred during application use when determining which system or application would be best used on a nursing unit.
  • Heuristic Evaluation = discount usability evaluation method: to detect problems early in the design process, when they can be most easily and economically corrected.
  • Formal usability test: use either experimental or observational studies of actual users using the interface to accomplish real-world tasks.

Ergonomics: the design and implementation of equipment, tools, and machines related to human safety, comfort, and convenience. commonly refers to attributes of physical equipment or to principles of arrangement of equipment in the work environment.

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