Authoritarianism is an important construct, and I'm glad the authors have brought it out of the shadows. But this was not the broad conceptual analysis I was hoping for. It is really an academic piece, laying the foundation for broader discussion of the concepts. They do a great job establishing that authoritarianism is a growing force in the polarization of American politics. But past that, I had difficulty seeing where they were going with it. I hope others will build on this.
I suppose that this is also a strength of the book. There was no hint of a political agenda behind the research. It really serves one basic purpose--to establish that authoritarianism is a real phenomenon, that it influences the world view of citizens, and that it is having an increasing impact on polarization in the United States.
In the face of what's on TV from FOX or MSNBC--demonstrating florid polarization every day--this was a pretty dry read, with an abundance of statistical explanations. I suspect that the authors felt it was overreaching to also try to draw broad conclusions about the ultimate meaning of authoritarianism and polarization in our political climate. To give it more context, my syllabus would include two other books on the same basic themes: "Moral Politics: How Liberals and Conservatives Think" by George Lakoff (2002), and "The Righteous Mind: Why Good People Are Divided by Politics and Religion", by Jonathan Haidt (2012).