When a message contains only positive support, people tend to believe that the message is purposely excluding information, which causes them to be skeptical toward that message. On the other hand, when a message contains a small amount of negative information, people develop stronger attitudes because they believe that the information is more complete. When the situation is suitable, you should include a small amount of negative information in your message (as well as arguments to address and counter that negative information) because people will assume that you’ve considered both sides of the
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