According to research by tormala and petty an attitude can be

The answer is "Attitude can be strengthened by a persuasive message or argument against it".
Zakaray L. Tormala and Richard e. Petty, both are professors from different universities, Tormala from Indiana University and Petty from Ohio state university. They both have a recent research in 2002 that is about Source Credibility and Attitude Certainty. According to their when people resist inducement, they can distinguish this resistance and become more sure of their initial approaches.

aliens are not real, the myth was created about 700 years ago because people found markings in the field of their crops. also, no there were no aliens on the moon.

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