There are three types of lies: Omission, where someone holds out on the facts; commission, where someone states facts that are untrue; and paltering, where someone uses true facts to mislead you. It isn't always easy to detect, but there are a few telltale signs.

Figuring out when someone's being honest can be exhausting. To stay on your toes, watch for a technique called "paltering" that uses true statements to distort your perceptions.