The Extended Parallel Process Model is model of how attitudes are formed and changed when fear

Fear

Fear is a distressing negative sensation induced by a perceived threat. It is a basic survival mechanism occurring in response to a specific stimulus, such as pain or the threat of danger...

is used as a factor of persuasion. The model states that fear appeals are most effective when an individual cares about the issue or situation, and that individual possesses and perceives that they possess the agency to deal with that issue or situation.

When an individual is exposed to an external stimuli or message consisting of fear, the individual can seek one of two courses of action Danger control or fear control.

Danger control

The danger control process is when the individual seeks to reduce the risk presented through direct action and adaptive changes. This is caused by protection motivation and response efficacy, the perception that an effective response is available.

Fear control

The fear control process focuses on the perception, susceptibility and severity of risk. This maladaptive change, or counter productive behavior. This is caused by defensive motivation and self efficacy, the perception that the individual is capable of utilizing this response.