Was this stated / implied in Catcher in the Rye (I honestly don't remember), in some other work by Salinger, or is it the result of one of those works of psycho

Was this stated / implied in Catcher in the Rye (I honestly don't remember), in some other work by Salinger, or is it the result of one of those works of psychological analysis that purport to tell us what really goes on in a novel?