REPETITION
An idea or position is repeated in an attempt to elicit an almost automatic response from the audience or to reinforce an audience's opinion or attitude. This technique is extremely valid and useful because the human being is basically a creature of habit and develops skills and values by repetition (like walking, talking, code of ethics, etc.). An idea or position may be repeated many times in one message or in many messages. The intent is the same in both instances, namely, to elicit an immediate response or to reinforce an opinion or attitude.
* The audience is not familiar with the details of the threat posed. Ignorance of the details can be used to pose a threat and build fear.
* Members of the audience are self-centered.
* The target can take immediate action to execute simple, specific instructions.
Fear of change. People fear change, particularly sudden, imposed change over which they have no control. They fear it will take from them status, wealth, family, friends, comfort, safety, life, or limb. That's why the man in the foxhole hesitates to leave it. He knows and is accustomed to the safety it affords. He is afraid that moving out of his foxhole will expose him to new and greater danger. That is why the psychological campaign must give him a safe, honorable way out of his predicament or situation.
Terrorism. The United States is absolutely opposed to the use of terror or terror tactics. But the psychological operator can give a boomerang effect to enemy terror, making it reverberate against the practitioner, making him repugnant to his own people, and all others who see the results of his heinous savagery. This can be done by disseminating fully captioned photographs in the populated areas of the terrorist's homeland. Such leaflets will separate civilians from their armed forces; it will give them second thoughts about the decency and honorableness of their cause, make them wonder about the righteousness of their ideology, and make the terrorists repugnant to them. Follow-up leaflets can "fire the flames" of repugnancy, indignation, and doubt, as most civilizations find terror repugnant.
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http://www.mapinc.org/propaganda/propaganda/proptech.htm#terror_technique