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. Even how much waiters remind customers of themselves can determine how much change they pocket by the end of the night.

    “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 Baaren divided 59 waiters into two groups. He requested that half serve with a phrase such as. “ Coming up !” Those in the other hall were instructed to repeat the orders and preferences back to the customers. Rick van Baaren then compared their take-home pay. 'The results were clear—it pays to mimic your customer. The copycat(模仿者) 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 maybe limited by his bill. After research on the 1,000 tips left for waiters, cabdrivers, hair stylists, they found tip percentages in these three areas dropped as customers' bills went up. In fact, tip percentages appear to plateau(稳定期) when bills topped $100 and a bill for $200 made the worker gain no bigger percentage tip than a bill for $100.

    “That's also a point of tipping,” Green says. “You have to give a little extra to the cabdriver 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.”

    One form of social prejudice against older people is the belief that they cannot understand or use modern technology. Activities like playing computer games, going on the Net and downloading MP3s are only for the youngsters. Isn't it unfair that older people enjoying a computer game should be frowned（皱眉）upon by their children and grandchildren?

    Nowadays older people have more control over their lives and they play a full part in society. Moreover, better health care has left more people in their sixties and seventies feeling fit and active after retirement. Mental activity, as well as physical exercise, can contribute to better health. Playing computer games is a very effective way of exercising the brain.

    When personal computers were first introduced, most older people didn't believe they would ever familiarize themselves with it. Now computers have been around for a few generations and retired people have gradually become more relaxed about using them for fun. Gamers over 65 prefer playing puzzle games and card games. Kate Stevens, aged 72, says: “I find it very relaxing. It's not very demanding, but you still need to concentrate.”

    Another development that has favored “grey games” is a change in the type of videogames available on the market. There's a greater variety of games to choose from, including more intellectual and complex strategy（策略）and simulation（模拟）games. Internet Chess and Train Simulator are among the most popular of these. Train Simulator is based on real-world rail activities. Players can choose from a variety of challengers, such as keeping to a strict-timetable and using helper engines during a winter storm.

    Some people argue that “grey gamers” simply don't have the skills required for computer games, and that teenagers are better.  This couldn't be further from the truth. Most computer games require the kind of analytical thinking that improves with practice, which means that the “grey gamers: may well be far better than gamers half a century younger than them. In games where speed is the main consideration, older people would be at a disadvantage because they may have slower reaction time. On the other hand, “grey gamers” have a preference for shower paced, mind challenging games.

For your next out-of-this-world vacation, you now have the option of literally going out of this world—-but it'll cost you $ 40 million. Then again, can you really put a price tag on having the time of your life? According to a new report from Popular Mechanics, Russia is looking to build a luxury hotel in outer space. There you will wake up to a breathtaking blue planet—--the earth! The hotel is expected to be stationed on the International Space Station (ISS).

While space tourism itself isn't exactly a novel idea, the notion of building a hotel out there hasn't been raised before. Really, other companies are still focused on the transportation part of the puzzle—-after all, a trip to space is enough for most folks.

    According to Popular Mechanics, the hotel will include a luxury orbital suite with big windows, personal hygiene(卫生) facilities, exercise equipment, and yes, WiFi. Because if you can't share your experience on social media, did it really even happen?

    Of course, the reasons behind the hotel aren't just for fun and games. Apparently, space tourism might be able to help the Russians pay for another module to add to the International Space Station. Russian space contractor RKK Energia is currently building the first such module, which will give scientists a laboratory and power supply station from which to conduct tests.

    If any of this is going to happen, however, Russia is going to have to hurry. With the ISS expected to be out of use in 2028, there's little time to build the hotel and find wealthy tourists to actually buy a trip into outer space.

    So if you've recently come into a fortune and are interested in what could be the time of your life, ISS is calling your name.

    Have you ever had your hand held during a dental procedure you feel uneasy about? What about a dental office that mimics（模仿） the spirit of Disneyland? If you're looking for a dental office that provides the best care and the best environment, you're looking for Dr. Licking's office in Sunnyvale.

    Office manager Judy, who has worked with Dr. Licking for 38 years, speaks highly of his kindness. She believes that the office is “the Disneyland of dentistry”. Everyone from children to their grandparents loves the environment and care they receive from this welcoming office.

    Dr. Licking is known as the best dental care provider for anyone who fears facing appointments with the dental office. The staff goes out of their way to make patients feel comfortable and at ease. Dr. Licking and Judy set the standard with their saying, “when someone comes to your home, you stand up and welcome them, like an old family friend.”

    Dr. Licking's office has all. They recently relocated to put the new equipment into their practice. The office is equipped with an intra-oral video camera, and as a patient you can get pictures of your teeth as you're walking out the door.

    Setting himself apart from other dentists, Dr. Licking continues his education beyond what is required. For this reason, he is one of few dentists in the country who offers ozone treatment. Ozone can naturally stop decay (蛀蚀) in its tracks. For more information on this new technology, visit their website at www.drjohnlicking.com.

    Dr. Licking's office is Diamond Certified, an honor given only to companies with the higher quality after extensive and continual research. Dr. Licking's office extends an invitation to you to meet their gentle staff and offers you a free office visit, including x-rays and an exam.

    The office holds extended hours ranging from 7 a. m. to 8 p, m., Monday through Thursday. Don't worry if you have an emergency. Dr. Licking's office responds to all emergencies and urgent calls.

    JOHN LICKING, D.D.S.

    Cosmetic & Family Dentistry since 1970

    408—736—6235

    drjohnlicking.com

    877 W. Fremont Ave. Suite C3, Sunnyvale

    2019 Oscars Academy Award Nominees (提名) for Best Picture

    Black Panther

    Type: Adventure

    Running Time: 134 min.

    Release Date: February 16, 2018

    Current rank: ★★★★

    Director: Ryan Coogler

    Actors: Chadwick Boseman, Michael B. Jordan

    With his father having died in Captain America: Civil War, T'Challa is the new ruler of the advanced kingdom of Wakanda. As the king, whenever a challenger for the crown announces his intentions, he must give up his powers and take them on in a physical challenge.

    The Favorite

    Type: Drama

    Running Time: 120 min.

    Release Date: November 30, 2018

    Current rank: ★★★

    Director: Yorgos Lanthimos

    Actors: Emma Stone, Rachel Weisz

    In the early 18th century, with England and France at war, a fragile Queen Anne occupies the throne as her close friend Lady Sarah Churchill governs the country in her stead, while tending to Anne's ill health and changeable temper.

    Green Book

    Type: Drama

    Running Time: 130 min.

    Release Date: November 21, 2018

    Current rank: ★★★★★

    Director: Peter Farrelly

    Actors: Viggo Mortensen, Mahershala Ali

    Tony Lip, an uneducated Italian-American who's known for using his fists to get his way, is hired to drive world-class, famous pianist Don Shirley on a concert tour from Manhattan to the Deep South. They must rely on the “Negro Motorist Green Book” to guide them to the few settlements that were then safe for blacks.

    A Star is Born

    Type: Musical

    Running Time: 135 min.

    Release Date: October 5, 2018

    Current rank: ★★★★

    Direct: Bradley Cooper

    Actors: Bradley Cooper, Lady Gaga

    When country music star Jackson Maine stops at a bar for a drink after a concert, he's both entertained and attracted by young nightclub singer Ally. He discovers that she writes songs as well as being a talented singer, but hasn't had a break because of her looks.

Earth Day Photo Contest

    A picture is worth a thousand words! Enter the TFK photo contest and show us: Why is Earth Day important to our planet?

    To enter the contest online, visit timeforkids.com and get details below.

    TIME

    ●The contest begins on January 9, 2017.

    ●The contest ends on April 20, 2017.

    INSTRUCTIONS

    ●An original and previously unpublished photograph that answers the Earth Day question "Why is Earth Day important to our planet?" and that was photographed by the entrant (参赛者) between June 1, 2016, and April 20, 2017.

    ●A brief description describing the picture: what is happening, where the photo was taken, the date the photo was taken and why the entrant chose to enter this image.

    ●Entrant's first name only; entrant's e-mail address; and parent's, teacher's or guardian's e-mail address. Limit one work per person. Sponsors are not responsible for lost, late, or incomplete entries, or entries not received for any reason. Works belong to sponsors, and none will be acknowledged (承认) or returned.

    ●By entering, the entrant ensures that the work is first made and has not been published in any medium or won an award.

    ELIGIBILITY

    Open to the elementary school students at age 8-13 at the time of entry in the USA.

    WINNERS' LIST AND PRIZES

    Judges will select 10 semifinalists (半决赛选手) from whom one grand prize winner and nine finalists will be chosen. The grand prize winner will receive a digital camera—approximate retail (零售) value: $300. The photograph entry of the grand prize winner will be published in the April 22 Earth Day issue of TIME For Kids. The photograph entries of all semifinalists will be published in the gallery of timeforkids.com. Winners will be informed by e-mail, and must respond within five days.