I have at least a nodding acquaintance with that work and while I think it’s worth considering and talking about, I don’t find it to be at all the most convincing explanation for conservatism and am far more persuaded by conservatism as being motivated by a desire for the preservation of hierarchy that manifests itself through said psychological traits, but that is the ultimate prior that informs them. Otherwise we would expect to see liberalism and conservatism more evenly distributed throughout our population, as with other psychological traits, but we don’t, to the contrary, they are very geographically dependent.

So while I don’t think that psychology has nothing to say about the issue, I definitely don’t think that its the most important factor.