If these liars have a 14 percent reduction in grey matter, that means that they are less likely to care about moral issues or are less likely to be able to process moral issues. Having more gray matter would keep a check on these activities.

Lying is cognitively complex. It is not easy to lie. It is certainly more difficult than telling the truth. Some people have a biological advantage in lying. It gives them a slight edge.

Lying is cognitively complex, ... It is not easy to lie. It is certainly more difficult than telling the truth. Some people have a biological advantage in lying. It gives them a slight edge.

Lying takes a lot of effort. You have to be able to understand the mindset of the other person. You also have to suppress your emotions or regulate them because you don't want to appear nervous. There's quite a lot to do there. You've got to suppress the truth.

White matter may provide liars with the tools necessary to master the complex art of deceit.

We looked for things like inconsistencies in their stories about occupation, education, crimes and family background.