From Page 76
This would be especially true of components not yet developed
(e. g., training or selection programs).
If you look at Figure 37.1 on Page 136 of your supplement, you will
find a graphic display of the various trade-offs involved in conducting
tests and making changes to a system at the different stages of development.
Not surprisingly, it costs progressively more to make HFE changes in later
stages of development.
Yet, changes recommended during later development
are also more likely to improve system effectiveness, since they are based
on more precise data.
manager will adopt recommended HFE changes decreases as the design becomes
Figure 37.1 also shows that the most cost-effective time to detect and
correct human errors or substandard performance times is towards the end of
the demonstration and validation phase. Why?
(1) Because you'll have to go through a lot of red tape if you try to make
changes later. Turn to Page 37.
(2) Because the only other alternative involves upgrading selection and
training, an expensive option. Turn to Page 50.
(3) Because design modifications are one-time costs. Turn to Page 46.
(4) All of these. Turn to Page 95.
From Page 41
(1) In the past, the Army and Navy have used different terms for similar
concepts, but such is not the case with DT and OT. Both services use DT and
OT to refer to two basic categories of testing. Now, which answer do you
chink is correct? Return to Page 41.
From Page 15
(2) These aren't the only factors that must be considered.
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