Researchers compared the results from both studies to determine if they exhibited any patterns across the participant pool. The study says that those with a more empathetic nature enjoy genres of music that are more mellow, such as R&B and soft rock, "unpretentious" such as country and folk, and contemporary such as acid jazz and Euro pop. Those with a more "systematic" way of thinking who focus more on structure and rules in their thought patterns enjoy music that's more intense.
Wishy washy, to say the least. No data. Then that unnecessary Nickelback comment at the end.
I'm sure there is some truth but this article as a whole should be taken with a grain of salt, at best.