What is the unity of effect?
Simply so, what is the unity of effect in the cask of Amontillado?
Poe's primary concern was “unity of effect,” which means that every element of a story should help create a single emotional impact. The website uses the tale, “The Cask of Amontillado” to illustrate this. The tone, for one, is the same from start to finish.
Also know, what is Poe's single effect?
Poe's concept of a "single effect" applies to short stories, and basically states that every element of a story should contribute to a single emotional effect of the story. This rule was important, because Poe was the founder of the short story, and this consequently became a foundational rule of the genre.
Poe stressed that a short story should focus on only one incident and one central character. The plot, the theme and the protagonist should be arranged carefully and the story constructed in a precise order to create 'a unity of effect.