Why Standard Audiometric Tests and Research Is Not Carried Out in Complex Hearing Environments?

[Juan]

I was wondering why standard audiometric tests and research is not carried out in complex hearing environments. I mean, the real world is not a sound-proofed, isolated, audiometric cabin, there are competing and overlapping sounds everywhere, background noise etc...

So why researchers do not start investigating from the basis of real world hearing conditions, in a complex hearing environment?

I mean... are results that always refer to audiometric cabin test conditions really relevant?