Cost-Justifying Usability, 2nd Edition

benefits to arrive at a net benefit. In this example, this calculation is shown in

Table 3.4. The analysis predicts a clear net benefit ($168,144.44) in the first year

alone, and a dramatic net benefit ($1,158,422.22) over the expected application

lifetime.

Our project usability engineer’s initial usability engineering plan appears to

be well justified. It is a fairly aggressive plan in that it includes all Lifecycle tasks,

and the most reliable and thorough techniques for each task. Given the very

clear net benefit, the usability engineer would be wise to stick with this aggres-

sive plan and submit it to project management for approval and funding.

If the ...