People prefer to say “yes” to individuals and organizations they know and like. Same goes for websites and other user interfaces.
The key to effectively employing the liking principle is user research. If you don’t know your users well, it’s very difficult to anticipate what techniques (similarity, familiarity, cooperation, association, and praise) will have a positive impact. Research techniques such as surveys, interviews, and usability testing can all contribute data to this exploration.
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