Political Science

The more people identify with a party, the more likely they are to ascribe bad motives to the other side’s policy goals.

Why does American politics feel so stuck these days, with bipartisan bills vanishingly rare and solutions seemingly taking a back seat to constant attacks?

Most policies are rife with trade-offs. They have an intended outcome and some regrettable side-effects. Our recent studies suggest that political polarization in the United States runs so deep that it leads partisans to see the other side’s intended outcome as a ruse and the side effects as the real intention. In other words, Democrats and Republicans not only disagree about policy matters; they believe the other party’s agenda is intentionally designed to do harm.

We call this tendency the partisan trade-off bias, and it applies to both parties. To a Democrat, the purpose of an environmental policy that reduces carbon emissions, for example, is to preserve the environment, and a corresponding loss of coal mining jobs is an unfortunate side effect. But a Republican, our research finds, might look at that same policy and see a plot to eradicate jobs in the fossil fuels industry. Meanwhile, a Democrat…[Read More…]