Great example, chess. This brings up an important parallel. When my son first started "exercising his lungs" (i.e. screaming), I found it to be an ear-piercing and terrible noise.

Now that I've had time to accustom myself to it, it not longer disturbs me nearly as much. The realization that screaming does not necessarily equate to disress on his part -- sometimes he screams just to scream -- helped.