Roller coaster phobia combine substantial heights with seemingly insignificant support, as well as free-falls and the illusion of uncontrolled drops. Because acrophobia involves an extreme fear of heights and falling, these conditions could cause someone who is an acrophobic to have an extremely negative reaction to riding roller coasters. Claustrophobia involves two parts, fear of physical restraint and fear of suffocation. The safety harnesses and enclosures on some rollercoaster and other rides are very restrictive, in order to protect the riders from harm. In addition, the speed of these rides can cause air displacement that makes it difficult for riders to catch their
Fear appeal that the effect of fear on intentions is mediated by the perceived severity. That is, fear does not act directly on intentions, but increases the level of perceived severity, which in turn raises intentions to act on the message. Indeed, the strength of the fear appeal is believed to be positively correlated with the perceived severity of the threat. Severity seems to produce the strongest effects on perceptions. The previous components are thought to determine what response an individual has to the message. One of these potential reactions to the fear appeal that is of the most negative consequence is