[TPIN] "volume recognition"

[Dean Betts]

I recently read that young people (15 and under?) can hear high pitched sound that they are unable to hear in their 20's and 30's.  Does anyone know, is this true for everyone?
What about someone who has never been exposed to loud sounds?  Would't they still have their ability to hear those high pitched sounds?
Another question: I know someone who has apparently had some low pitched hearing loss; is this common?
Can ringing in the ears be an indicator for hearing loss?
Final question for tonite:  how many of you use earplugs on a regular basis?