User Centered Design

YouX Academy

What is User Centered Design?

Luís Filipe

Luís Filipe

Managing Partner YouX

Miguel Félix

Miguel Félix

iBloom Managing Partner

What is User-Centered Design

In this article we are going to talk about a very important concept for those who work in the areas of UX and Usability: user-centered design (or User Centered Design, in the English version). And it is all the more important as it continues to be a concept very little understood in the software development industry, where many professionals continue to see design as drawings and layouts to beautify the applications developed in the meantime. (We have previously written about the outcome of this way of thinking.)

According to the ISO 13407 , “ Human-centered design is characterized by: the active involvement of users and a clear understanding of user and task requirements; an appropriate allocation of function between users and technology; the iteration of design solutions; multi-disciplinary design.

Thus, we speak of a holistic, multidisciplinary and iterative approach to the production of interfaces, according to the principles of UX and usability. Rubin and Chisnell (see reference below) call attention to the need to contextualize usability before moving on to measurement. “(…) it is important for the reader to understand the basic principles of UCD in order to understand the context for performing usability testing.
Usability testing is not UCD itself; it is merely one of several techniques for helping to ensure a good, user-centered design. We want to emphasize these basic principles of user-centered design:

  • Early focus on users and their tasks
  • Evaluation and measurement of product usage
  • Iterative design"

User-centric design calls for a new approach to the way companies develop their products. Although there are no universal formulas for success, there are some common attributes that companies that practice this path share:

  • Phases that include user input
  • Multidisciplinary teams
  • Attentive management to the process
  • Perspective of continuous learning
  • Defining previous usability goals
User Centered Design
Rubin, J., Chisnell, D., Handbook of Usability Testing. How to Plan, Design, and Conduct Effective Tests, Ed. 2008

Developing an interface for it to be useful would thus have to result from a structured, systematic and iterative process.
Only in this way can the intended objectives and goals be achieved. The authors even draw attention to the fact that the very concept of usability needs to be defined in the organization that develops the project. Continuing with Rubin and Chisnell: “An operational definition of what makes your product usable […] may include:

  • Usefulness
  • efficiency
  • ness
  • Satisfaction
  • Accessibility

Thus bringing us full circle to our original description of what makes a product usable. Now let's review some of the major techniques and methods a usability specialist uses to ensure a user-centered design.”

Nielsen, J. (2013) points in the same direction when defining usability is a quality attribute that measures the ease with which an interface can be used, encompassing all interface elements, from the visual component of the interaction, to the contents and the system.
This author considers 5 generic components that determine the usability of an interface: • Ease of learning : Is it easy for users to complete the proposed tasks the first time they interact with the interface?
Efficiency : After having learned to use the interface, how quickly can the user perform his tasks?
Memorization : When the user resumes using the interface after a period without using it, is it easy for him to use it again?
Mistakes : How many mistakes does the user make?
And after practicing these mistakes he can recover and continue to use? • Satisfaction : Is the interface pleasant to use?

And then? Do you really still think that designing applications is really a matter of beautiful layouts?

References:

Nielsen, J. (1993). Usability engineering. Boston: AP Professional.

Rubin, J., & Chisnell, D. (2008). Handbook of usability testing: how to plan, design, and conduct effective tests (2nd ed.). Indianapolis: Wiley.

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