People who are pro-choice on abortion also tend to be against the death penalty. But are those beliefs internally connected? Would changing one belief change the other? And do all of our views add up to a coherent belief system? Mark Brandt finds that beliefs that tend to go together in the society as a whole don’t necessarily map onto how we see them fitting together in our own heads. And the internal relationships between our ideas can be better used to predict the dynamics of opinion change. We do have coherent belief systems, but they may not match our societal divisions.