Misunderstood Melodrama

I have noticed that in almost all of Salinger's short stories in this collection, there is at least one character who is  overtly melodramatic. In "Uncle Wiggily" Walt appears to be a over-dramatic when he says he should have his hand shoved through the glass window of the train. Eloise is also a very dramatic character and complains about the tribulations of her life even though it is quite lavish and comfortable. In "Eskimos", Selena's brother is extremely dramatic about the small cut on his finger saying "this has been the most horrible morning of my entire life" (75).  In "Pretty Mouth and Green My Eyes<" Arthur has dis-proportionatley dramatic reactions to his wife's late return home and the possibility of her affair. Both Ésme and X are fairly dramatic in their relations to one and other. In addition, Jean De Daumier-Smith is an exceptionally dramatic character (especially in his obsession with Sister Irma. Do you think this is some sort of satire on the melodrama of the times? It could also be to point out emotional pain through ostentatious complaining about trivial physical pain. Why else might Salinger decide to include one of these histrionic characters in each of his stories?

-Becca