Copyright 2018 NPR. To see more, visit STEVE INSKEEP, HOST: If you ever tell a lie, it would be normal for your conscience to bother you. But here's a question. If you tell many lies, does that voice inside go quiet? Neuroscientists recently explored this idea. And our colleague Rachel Martin sat down to talk about it with NPR's social science correspondent Shankar Vedantam. RACHEL MARTIN, HOST: Hi, Shankar. SHANKAR VEDANTAM, BYLINE: Hey, Rachel. MARTIN: So we're talking about neuroscientists. They were studying the brain, as they are known to do. VEDANTAM: (Laughter). MARTIN: Who are they, and what did they find? VEDANTAM: So that's right. If you buy the idea that all behavior stems from the brain, Rachel, this prick of conscience that we often experience obviously has something to do with what's happening in the brain. Some months ago, Neil Garrett, Stephanie Lazzaro, Dan Ariely, and Tali Sharot conducted a very interesting study. I talked to Dan Ariely. He studies economics and
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