The reverse symmetry or chiastic structure is usually used in literature examples are Beowulf, Starwars, Harry Potter, Beauty and the beast, other examples in ancient literature such as the epic poetry of the Iliad and the Odyssey...etc.
Alternate names for chiastic structured writing are inverted parallelism, reverse symmetry, concentric symmetry, ring structures...etc
Have Psychological research shown or supported that it is easier for the reader to follow the information using that writing structure...etc.?