I've been reading about this all day, so yes I've followed up on just about everything available on the web.
Good.
If what you got from the article was that it was biased against conservatives, that's what you were looking to get out of it - the article neither lauded liberals or condemned conservatives. It merely pointed out some correlations between personality traits and people's thought processes and their subsequent political leanings.
My main objection to this article and all the others like it, as previously stated, is that the authors start with an assumption that people can be placed into arbitrary groups that are poorly defined, and think they can draw conclusions that have any meaning.
Let's look at the "terrorist attacks makes people more conservative" claim. Add that to the claim about larger right amygdalas in conservatives, and you ought to be able to draw the conclusion that terrorist attacks cause liberal's right amygdala's to grow larger. Maybe they do, I haven't studied the issue, but the idea seems patently absurd. And if liberals can become more conservative in some ways, what does that mean about about the other traits those liberals have that make them liberal? Can you now associate those traits with conservatives?
When you base your studies on people's self identification of "political leaning", how do you control for different perspectives on what those terms mean? I personally believe that anyone who is in favor of more government control is a leftist, statist, liberal. But how do religious "conservatives" fit in. They want the government to control our values. And how do anti-government hippies fit in? I don't think anyone who wants more government control is really a conservative, and I don't see free love and shroomin' as conservative traits. So then we must split up categories into social and political conservative, and social and political liberal, for those labels to fit in with my objection.
Hopefully you can see where I'm going with this. Because it won't stop there. The categories will continue to pile up, because this group within that group won't exactly match this other group within that group. Eventually you will be left with billions of highly specified groups that include only one person, that is an individual. This is the fatal flaw of intersectionality.
Why do conservatives interpret everything they read that's even a tad critical of them as negative or slanted by the liberal media? I find this to be incredibly narcissistic, and overly sensitive, but I digress.
I don't know, why do liberals do such a poor job of writing balanced articles that aren't obviously pushing an agenda? And why do other liberals think it's narcissistic and overly sensitive too point out such poor writing? These are questions we may never have answers to...
You are correct in your assessment that the article fails to go into too much depth on the brain and it's functions, but I find that to be a positive thing on a site like this - try to post an academic journal here and see how that goes...watch the people's eyes glaze over and the conversation fail to launch as they refuse to read it instantly. It's meant to give the people here a cursory understanding of the material and some insight into themselves and how/why they may lean in a particular direction politically. If they're interested, and they'd like to know more, the information is available. I found quite a bit on this topic today as I ventured down the rabbit hole.
If you'd like to have a deeper conversation on this matter, I'd very much enjoy that, and I invite you to post some material for us to discuss. If I haven't already read it today, I'll take a look tomorrow morning and we can debate some of the finer points.
I don't mind a good discussion, but I'm pretty busy today, don't expect a timely response.