What does "evidenced" a link mean? Shown? Proved? Demonstrated? Established?
Why are people giving up using English - it's a perfectly serviceable language.

This is an interesting study. One might expect that general intelligence would correlate to a factor (cortical thickness) that effects a large portion of the brain. I would be interested to see a study of more specific subtypes of intelligence (eg. verbal), and see how brain structure effects that. I find it interesting that the largest effect was in the parts of the brain that are communication hubs. It's not so much that one part or parts of the brain work well, it's that the parts work well together.

Doesn't DRD4 moderate cortical thickness? It would be interesting to control this study for genotype at that locus and see if you get the same results.