Hierarchy of Fears. The next step in the systematic desensitization process involves constructing what is called a hierarchy of fears, which is a list of the things that the person identifies as fearful related to flying in order from the least to the most anxiety-provoking.ierarchy of Fears. The next step in the systematic desensitization process involves constructing what is called a hierarchy of fears, which is a list of the things that the person identifies as fearful related to flying in order from the least to the most anxiety-provoking.
Appa is a fictional character on the Nickelodeon animated television series Avatar: The Last Airbender and in the film The Last Airbender. In the series, Appa is the only known living sky bison, a species of animals that can fly naturally, and is the animal guide of the protagonist, Aang. Dee Bradley Baker voices Appa, along with all the other animals, in both the TV series and the film.
Appy is a historian who has been an adjunct faculty member in the history departments of Harvard and MIT. With SpellCraft School of Magic, Appy drew on the studio's background as fantasy gaming geeks to create the ultimate solo wizard experience.