Why do liars use question inflection?

Liars often use question inflection, also known as "uptalk," when making statements because it serves as a subtle way of asking, "Do you believe me?" This vocal cue is typical in scenarios such as the game "Two Truths and a Lie," where liars tend to inflect their voice upward on the fabricated statement. The use of question inflection in statements can be an unconscious attempt by the liar to seek validation or agreement from the listener, turning the statement into a question of believability 1.