I see that Chris Mooney has written a book "The Republican Mind" that looks at the different character types of people who are attracted to the opposing conservative and liberal sides of politics. It is being discussed around the place in relation to climate change in particular.
This is an especially interesting topic, because until the last decade or so, I would not have said that conservatives (at least of the non-American variety) showed signs of being strongly anti-science. Even the Americans, with their significant chunk of disbelief in evolution in the population, still seemed easy convinced of science-y (or at least technological) things like the "Star Wars" laser defence system proposed by Reagan, and nuclear power generally.
But there is no doubt that AGW has changed this.
So, while I have long thought that that conservatives and progressives do tend towards some differences in character and world outlook, I am sceptical that this has much to do with the fierce resistance to accepting what mainstream science is saying on climate change. This blog post at the Economist discusses this, and the comments following it are well worth a read too.
In Australia, John Quiggin has noted the book as well. It is only a matter of time before it is discussed at the frequently embarrassing-as-an-advertisement-for-the-Right blog Catallaxy, but there will be virtually nothing of value said about the topic there by its regular crew.