[sneak]

If you scored worse than a coin flip, then you are successfully able to distinguish 320kbps from lossless, which is a rare feat in human beings! (Just invert your answer for the correct one.)

If you cannot distinguish, you will be the same as a coin flip; i.e. random.

[sorum]

Hah! Never thought of that. Nice one

[alanh]

Studies have shown that people that grew up listening to compressed audio tend to rate it as 'better' than lossless, which is kind of sad/amazing.

Anyway, not to take this sub-thread too seriously, but obviously it depends how reproducible your deviation from 50-50 is :-)