UX designLesson 2 of 3 in the course Ergonomics and human factors

Usability: User-Centered Design, Evaluation, and Iterative Improvement

5 flashcards · 5 quiz questions · 5 match pairs · 5 fill-in sentences · English

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Summary

Usability describes how well people can use a product or system to achieve their goals. This lesson introduces the core idea and the qualities that make an interaction usable.

Usability is the capacity of a system to help specified users complete specified tasks safely, effectively, efficiently, and with satisfaction in a particular context. The system may be software, a website, a book, a machine, a vehicle, a process, or a simple tool such as a hammer or door handle.

All flashcards

What is usability?
The extent to which specified users can achieve specified goals effectively, efficiently, and satisfactorily in a particular context of use.
What is effectiveness?
The degree to which users complete intended goals accurately and completely.
What is efficiency?
The resources, such as time, effort, or steps, users need to achieve their goals.
How does utility differ from usability?
Utility concerns whether the product provides the functions users need. Usability concerns how well users can use those functions.
What is context of use?
The users, tasks, equipment, and physical or social circumstances in which a product or system is used.

Quiz questions

  1. Which usability dimension concerns how easily people regain proficiency after time away from a system?Answer: Memorability
  2. What is the defining feature of contextual inquiry?Answer: It studies users performing their tasks in their usual setting.
  3. What distinguishes participatory design from simply consulting users?Answer: Users actively help shape design decisions.
  4. In a website study, participants group related content to suggest useful categories. Which method is being used?Answer: Card sorting
  5. What characterizes the RITE method in usability testing?Answer: Teams revise the interface promptly when a clear problem and solution emerge.

Based on the Wikipedia article Usability, licensed CC BY-SA 4.0. Adapted into a summary, flashcards and quizzes.

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