The Humanizing Voice: Speech Reveals, and Text Conceals, a More Thoughtful Mind in the Midst of Disagreement

A person's speech communicates his or her thoughts and feelings. We predicted that beyond conveying the contents of a person's mind, a person's speech also conveys mental capacity, such that hearing a person explain his or her beliefs makes the person seem more mentally capable-and therefore seem to possess more uniquely human mental traits-than reading the same content. We expected this effect to emerge when people are perceived as relatively...