Liars may be afraid of getting caught in their own traps.
The more detailed a person's story, the more likely it contains accurate self-depictions.2. When people describe themselves in one part of an online profile, they should be able to provide back-up evidence somewhere else that confirms it.
The results of the computer analyses fit a theory known as Interpersonal Deception Theory, which predicts that liars use communication strategically to accomplish their goals.
You could also, if you are seriously interested in pursuing a relationship with this person, resort to a Google search.3. The person strying to sway you will try to avoid negative associations.
The liar will want you to feel warm and fuzzy, not uncomfortable: "It's all good." An unrealistically positive image may be just that—unrealistic.4.
After all, we don't always want to admit the truth about ourselves to ourselves.
To supplement the self-ratings, the researchers also calculated an objective deception index comparing what participants said about their physical attributes (height, weight, age) with their measured attributes. A group of undergraduates compared the online photos to photos taken in the lab to determine how accurate they were.