A study in 2005 on the causes of acrophobia found that this phobia might also be related to acute case of height vertigo, which is caused by the inability to maintain balance without adequate visual feedback [REF].
Because most roller coasters combine substantial heights with seemingly insignificant support, as well as free-falls and the illusion of uncontrolled drops, someone who is an acrophobic would have an extremely negative reaction to riding roller coasters [REF].