According to your text, if you want to detect lying you'll gain the most information if you attend to the facial and eye behavior of the person you are observing.

Question

Quizplus · Accepted Answer

Research suggests that relying solely on facial and eye behavior is not the most effective way to detect lying, as these cues can be unreliable and easily manipulated. Other factors, such as verbal inconsistencies and body language, should also be considered.

According to Your Text, If You Want to Detect Lying