You could ask them. Or you could give them the benefit of the doubt and believe and trust them.
Their facial expression will give it away.
Give them electric shock theropy until they tell you.
Look for inconsistencies in their story, pay attention to their body language and facial expressions for signs of discomfort or evasion, and consider if their explanation aligns with known facts or evidence. It's also helpful to ask clarifying questions and trust your instincts.
You can find out by matching his words with his actions. If they don't match he could be lying. You could also carry out a little investigation to find out.
nerolinguistics is the study of if someone is lying
Perjury is to lying as homicide is to killing someone.
Chronic lying is a sign of sociopathy.
If you are lying about seeing someone else when you shouldn't be the it's cheating. If you are lying so you don't hurt someone's feelings or you're lying to protect yourself from something you did wrong it is not cheating.
The chemical released during lying is catecholamines
No
protecting someone
You can detect if someone is lying is if they do not look into your eyes when they are talking to you about stuff. However if thelier is good at acting then all you could do is catch them in what ever they are lying about.
Maggie has the power to tell if someone is lying. Charles also has the power to tell if someone is lying.
Usually you can tell if someone is lying by the look on his/her face, they either look too serious or they are slightly smirking.