Polygraph tests can supposedly detect when a person is lying. But how can a machine do that, and can we really trust the ...

Get your news from a source that’s not owned and controlled by oligarchs. Sign up for the free Mother Jones Daily. Hanafin, a retired FBI agent, had administered a polygraph test last fall to ...

Most people think polygraphs — also called lie-detector tests — can determine whether you're lying. But the technology has its critics. "The public needs to know that polygraph testing has no ...

All polygraph questioning techniques that aim at some form of standardization or reproducibility involve comparisons of physiological responses to questions of central interest for the investigation ...

When it comes to lying, our brains are much more likely to give us away than sweaty palms or spikes in heart rate, new evidence suggests. The study found that scanning people's brains with fMRI, or ...