We've all been on the receiving end of an angry glare, whether from a teacher, parent, boss, or significant other. These angry expressions seem to boost the effectiveness of threats without actual aggression, according to research published in Psychological Science, a journal of the Association for Psychological Science.
The research findings show that angry expressions lend additional weight to a negotiator's threat to walk away from the table if his or her demands aren't met, leading the other party in the negotiation to offer more money than they otherwise would have.