In chapter 16, what tone is Salinger using when it comes to describing kids and their behavior?

The fascination that Holden has for Phoebe seems part of a longing for childhood. Holden resists change; he dislikes trips to the museum precisely because their static nature reminds him how much he changes at every visit. Holden seems to fear change and maturity, giving great sentimental weight to childish pleasures while fearing the qualities that mark adult life.