New research provides additional evidence that political ideology can interfere with logical reasoning. The findings, published in the scientific journal Thinking & Reasoning, shed light on how politically motivated reasoning impacts the ability to correctly evaluate syllogisms. A syllogism is a kind of logical argument that applies deductive reasoning to arrive at a conclusion based on two propositions that are asserted or assumed to be true. (“All men are mortal. Socrates is a man. Therefore, Socrates is mortal.”) Syllogisms can be valid or invalid, depending on whether the conclusion follow…