NASA's Usability Web Site
Follow this link to skip to the main content
+ Contact NASA
Usability and User Centered Design Overview User Centered Design Processes Usability Guidelines Usability Resources and Tools Lessons Learned

+ Home
Overview
what
why
How
when
where

In Software Engineering: A Practitioner's Approach, author Robert Pressman shows that for every dollar spent to resolve a problem during product design, $10 would be spent on the same problem during development, and multiply to $100 or more if the problem had to be solved after the product's release.

- IBM
Usability Overview

When is Usability Important?

A User Centered Design approach should be employed at the beginning of your project. Usability is important at each stage of the design process.

Conducting usability tests early in the design process is cheaper and easier because problems can be identified before too much time and money has been invested in the development. Catching structural usability issues early in the design phase can prevent major and costly re-architecting later in the development cycle.

+ Next: Where are Usability Tests Conducted?


FirstGov - Your First Click to the US Government
+ NASA Portal Project Information
+ Official NASA Public Portal Affinity Kit
+ NASA Privacy Statement, Disclaimer,
and Accessibility Certification
NASA - National Aeronautics and Space Administration
NASA Official: Colin Enger

+ Version Information