Precocious kids and jd Salinger

Have started jd salinger story or novella or what have you Zooey (1957) and got to thinking about precocious kids in fiction. Zooey about Salinger's Glass family of 7 famously precocious ones whose lives each in its own way take shape beneath the shadow of the suicide on honeymoon of oldest child Seymour this novella focused on one of the younger glasses Z who at this time is a successful tv actor reading a long letter of advice from older brother buddy a failed writer on crappy teaching job all the glass kids former child radio quiz stars. So about precocious kids in lit - isn't it really an author's cheap trick i mean do any Salinger kids other than caulfield sound in any way like children? Or what about other such novels - edisto? Or incredibly loud close (which i have not read btw )? No the precocious child is a sneaky way for the author to work his or her own voice and views into the story without accepting full ownership - they seem all the more smart and original because they're a child's and would seem puerile if presented as those of an adult which in fact they are.

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