
106 Human– Computer etiquette
5.5.2 Evaluation of Feedback with Politeness Strategies
In order to conduct an evaluation with the maximum possible exter-
nal validity, we needed to motivate users of Tactical Iraqi to use both
the polite and direct versions. We therefore rst released to our user
community the version of Tactical Iraqi in which polite tutorial feed-
back was deliberately disabled, and then made available in a version
with polite feedback at a selected test site, the Marine Corps training
Figure 5.4 Feedback with appropriate politeness strategies delivered by an agent.
Table5.1 Examples of Politeness Strategies
POLITENESS STRA ...