Now, I'm a strange conservative because I'm a strange person. By that, I mean that I have made political philosophy a much deeper area of study and thought than the vast majority of Americans. My liberalism--that is, American conservatism--is grounded in a conception of the proper scope of government that also happened to be the major contributor to the United States Constitution. It has its roots in John Locke, the Baron de Montesquieu, and several others. This conception was transmitted to me partially through my father, and partially through a man I consider to be an intellectual hero nearly unparalleled in American history: William F. Buckley. It is not based on feelings or good intentions; it is a intellectual belief.
Doubtless, the political views of some conservatives stems from a respect for authority, purity, and the in-group. But my classical liberalism, and those of many of my friends, is based specifically on government non-intervention, and none of those moral values from which conservatives' views supposedly stem. But it is easy to see how a liberal, like those whose research is used to support the article's argument, would perceive conservatives' values in this way.
When progressives look at policy, they do indeed look at its effects on various groups. In fact, this is their main viewpoint for policy. Their intent is to make groups equal; thus, affirmative action counteracts the corrupt power relationships between race and gender groups, progressive income taxation counteracts the corrupt power relationships between rich and poor, etc. From this standpoint, it is easy to see how conservative views could be seen as deliberately unequalizing. In some cases, particularly the issue of gay marriage, this might possibly be a fair characterization. But in the case of flat taxation, lowered government spending, and decreases in government services, conservative concerns are not about power relationships between citizen groups, but simply between the government and the citizenry.
This concept is so foreign to most modern liberals' minds--and to the minds of people in general, often--that it usually does not even occur to them. When it is made explicit, it is more often an object of wonder than a position seriously to be debated. More harmfully, history has been often written by Progressives--whose devotion to cartoonish images of reality that constitute a sort of modern Big Lie is legendary and continues to this day--who have forgotten many important details of that important time in our nation's history when progressivism overtook classical liberalism as the nation's most influential political philosophy. (This is the reason that I consider Jonah Goldberg's book to be so crucial to a real understanding of America's political history, as well as modern liberalism in general.)
Are conservatives evil? Dumb? Morally different? Not at all; they are the out-group of an elite cultural liberalism that, contrary to conventional wisdom, favors above all things purity, the in-group, and respect for the authority of government.