Nursing Informatics

Usability Testing (Reading & Sharing)

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?)

The Five Goals of Usability:

  1. It is easy for users to accomplish basic tasks the first time they use the product.
  2. Once learned, the design permits users to quickly and easily perform the needed tasks.
  3. If it is not used for a period of time, it is easy to reestablish one’s proficiency in using the product.
  4. Users make very few errors, but any that they do make are easily remedied.
  5. The design is pleasant to use.

Usability tests:

  • Heuristic Evaluation or Heuristic Inspection Methods
  • Simplified Usability test using Early Prototypes
  • Cognitive Walkthrough
  • User interview
  • Surveys
  • Critical incident analysis
  • Satisfaction questionnaires


To be cont. … …

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