I find this to be interesting, even if I am rather skeptical. I think my biggest problem is that they used Hockey players as their test subjects.

Now, I admit, I had not really paid much attention to the lengths of those two fingers in comparison, and I do have the typical male pattern (index finger shorter than the ring finger). And I understand the reasoning they give for the differences. I'm just not sure I buy the idea without a study that controls for other factors. I suspect that being into Hockey, especially professionally, would show significant factors of childhood/young violence and aggressive tendencies, which were either induced or encourages by envirnoment. I would think this would be a factor which would be controlled for, since it is not genetic/biological.

What do you think?