You’re out to dinner. The food is delicious and the service is fine. You decide to leave a big fat tip. Why? The answer may not be as simple as you think.

Tipping, psychologists have found, is not just about service. Instead, studies have shown that tipping can be affected by psychological reactions to a series of different factors from the waiter’s choice of words to how they carry themselves while taking orders to the bill’s total.

“Studies before have shown that mimicry (模仿) brings into positive feelings for the mimicker,” wrote Rick van Baaren, a social psychology professor. “These studies show that people who are being mimicked become more generous toward the person who mimics them.”

So Rick van Baren divided 59 waiters into two groups. He requested that half serve with a phrase such as, “Coming up!” Those in the other half were instructed to repeat the orders and preferences back to the customers. Rick van Baaren then compared their take-home(实得收入). The results were clear---it pays to mimic your customer. The copycat waiters earned almost double the amount of tips to the other group.

Leonard Green and Joel Myerson, psychologists at Washington University in St. Louis, found the generosity of a tipper may be limited by his bill. After research on the 1,000 tips left for waiters, cab drivers, hair stylists, they found tip percentages in these three areas dropped as customers’ bills went up.

“That’s also a point of tipping,” Green says. “You have to give a little extra to the cab driver for being there to pick you up and something to the waiter for being there to serve you. If they weren’t there you’d never get any service. So part of the idea of a tip is for just being there.”

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When we present a speech, how can we win the audience’s trust? Please build the three capacities.

【小题1】 Firstly, we can demonstrate knowledge of our topic by either using examples from our own experience or sharing current trends in our field. Secondly, we demonstrate competency by our presentation skills that we put into. Therefore, we’ll present a convincing speech.

Stories can inspire the emotion of our audience, through which the audience starts to connect with us on a personal level.What personal examples can we share in our speech? 【小题2】 People often trust their senior leader more if that leader is very honest...

【小题3】 What makes a person a powerful speaker isn’t his complex speech skills. Instead, it’s his ability to be the same confident, authentic speaker on stage in front of 1,000 people as lie is in front of a group of five people.

Does our message constantly change or does it remain consistent? 【小题4】 In order to demonstrate consistency, we need to be consistently prepared and conscious about both our words and our actions. Consistency is how we build a positive reputation.

These three capacities are not easy to build. 【小题5】 When we take time to prepare a speech or difficult message, try to address the three capacities in our presentation. The results will have a massive and positive impact on us.

Tips for avoiding traffic jams

The radio has more than just music. Check the local news station for the latest traffic report. Or go online and check traffic cameras before you set out. If there is a jam, you’ll be prepared and can try another route.

Take the road less travelled. Although highways may be the most direct route, back (偏僻的) roads can be much less crowded, which can save you from the frustration of the stop­and­go traffic.

Rush hour isn’t just a lovely nickname. It means the morning and afternoon traffic lasts for several hours, but they’re still called “rush hour” for a reason — everyone’s on the road and in a hurry to get somewhere. Treat rush hour like bad weather — if you don’t have to go anywhere, stay off the roads.

Tips for those unavoidable traffic jams

Don’t break the law. You’ve gone 30 feet in 30 minutes and all of a sudden you see people using the shoulders (紧急停车道). Don’t behave like them. Not only is this illegal, but also there’s a good chance they’ll get caught or cause even more problems.

Pay extra attention to zig­zaggers (Z字形行进者). When some people are anxious, they may start changing lanes (车道) every 5 seconds or cut you off. Keep checking your windows and mirrors for these lane changers.

Look for an escape. If it is possible to exit the road safely, do it. Use a GPS unit, and you can change your route mid­trip if needed.

Be courteous. Good manners could help you avoid a possible accident. Allow people in from a lane that is ending. Speeding up to keep them out increases your chances of an accident.