A new study has tackled one of the most crucial questions for an election year: Who can you trust? In the study, published in the journal Emotion, researchers looked at how subtle facial cues help individuals decide whether another person is trustworthy. They devised a simple computer game in which participants started with 10 dollars and could choose either to pass it on to a partner or keep it for themselves. If they passed it on, the amount was tripled to 30 dollars, which the partner could..