Persuasive Technology

eler using an information kiosk may eventually discover that it provides

information only for restaurants that have paid a fee. This pay-for-listing

arrangement may only become apparent over time, as the person

becomes more familiar with the service. In that case, the credibility of the

service may decline rather than increase with extended use.

Earned credibility is the gold standard, both in human-human inter

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actions and in human-computer interactions. It is the most solid form of

credibility, leading to an attitude that may not be easily changed (al

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though in some cases, one misstep can instantly destroy credibility, as in

the example of the laser ...