Detecting   a lie   isn't always easy. People often pay attention to cues like eye contact, nervous gestures, and tone of voice, but the truth is that these indicators can be unreliable. Some people may appear calm when lying, while others appear nervous even when telling the truth. For this reason, various  behavioral psychologists   suggest paying more attention to   the questions asked   than to the other person's gestures.

In recent years, researchers and experts in   communication and language   have noticed that certain strategic questions can significantly increase the likelihood of detecting inconsistencies in someone's story. There's a simple technique based on   two key questions   that helps detect contradictions when someone isn't telling the whole truth.

The principle behind this method is simple:   lying requires more mental effort than telling the truth  . When someone invents a story, they must remember the details they've just made up, maintain narrative coherence, and answer new questions without contradicting what they've already said. This process requires a greater level of concentration and memory than simply recounting what happened.

The first question some experts recommend is asking the person to   retell the story, but in reverse order  . For example, if someone is recounting what happened in a given situation, you could ask them to describe the events, starting at the end and working backwards step by step.