Next time a customer comes to your office, offer him a cup of coffee. And when you're doing your holiday shopping online, make sure you're holding a large glass of iced tea. The physical sensation (感觉) of warmth encourages emotional (情感的) warmth, while a cold drink in hand prevents you from making unwise decisions—those are the practical lesson being drawn from recent research by psychologist (心理学家) John A. Bargh.

    Psychologists have known that one person's perception (感知) of another's “warmth” is a powerful determiner in social relationships. Judging someone to be either “warm” or “cold” is a primary consideration, even trumping evidence that a “cold” person may be more capable (能干的). Much of this is rooted in very early childhood experiences, Bargh argues, when babies' sense of the world around them is shaped by physical sensations, particularly warmth and coldness.

    Feelings of “warmth” and “coldness” in social judgments appear to be universal. Although no worldwide study has been done, Bargh says that describing people as “warm” or “cold” is common to many cultures, and studies have found those perceptions influence judgment in dozens of countries.

    To test the relationship between physical and psychological warmth, Bargh conducted an experiment which involved 41 college students. A research assistant who was unaware of the study's hypotheses (假设), handed the students either a hot cup of coffee, or a cold drink, to hold while the researcher filled out a short information form: The drink was then handed back. After that, the students were asked to rate the personality of “Person A” based on a particular description. Those who had briefly held the warm drink regarded Person A as warmer than those who had held the iced drink.

    “We are grounded in our physical experiences even when we think abstractly (抽象的),” says Bargh.

    That little "a" with a circle around it that is found in e-mail addresses is most commonly referred to as the "at" symbol. Surprisingly though, there is no official, universal name for this sign. There are lots of strange terms to describe the @ symbol.

Before it became the fixed symbol for e-mail, the symbol was mostly used to represent the cost or weight of something. For instance, if you bought 6 apples, you might write it as 6 apples @ $1.11 each.

    With the introduction of e-mail came the popularity of the @ symbol. The @ symbol separates a person's online user name from his mail server address, for instance joe@uselessknowledge.com. Its widespread use on the Internet made it necessary to put this symbol on keyboards in countries that had never seen or used the symbol before. As a result, there is really no official name for this symbol.

    The actual origin of the @ symbol remains unknown. History tells us that the @ symbol came from the tired hands of the monks(僧侣) in the Middle Ages. During the Middle Ages when there were no printing presses, every letter of a word had to be copied by hand for each copy of a published book. The monks that performed these long and boring copying duties looked for ways to reduce the number of strokes (笔划) per word for common words.

    Although the word "at" is quite short, it was such a common word in texts and documents that monks in the Middle Ages thought it would be good idea to shorten the word "at" even more. As a result, the monks left out the "t" and created a circle — getting rid of two strokes.

    When the company was small, Google cared a lot about getting kids from Harvard, Stanford, and MIT. But Laszlo Bock, Google's former Senior Vice President of People Operations, said it was the "wrong" hiring strategy. Experience has taught him that there are exceptional kids at many other places, from state schools in California to those in New York. "What we find is that the best people from places like these are just as good if not better as anybody you can get from any Ivy League school," said Bock, who authored a book titled "Work Rules!"

    So what else does Google not care about:

    Grades: Google's data shows that grades predict performance for the first two years of a career, but do not matter after that.

    Brain-teasers: Gone are interview questions such as: Why are manhole covers (井盖) round? How many golf balls can fit in a school bus? "Our research tells us those questions are a waste of time," Bock said. "They're a really coachable skill. The more you practice, the better you get at it."

    Here's what Google does care about:

    Problem solvers: Your cognitive (认知的) ability, or how well you solve problems.

    Leaders: The idea is not whether you were president of the student body or vice president of a bank, but rather "When you see a problem, do you step in and help solve it?" and then critically, "Are you willing to let somebody else take over, and make room for somebody else? Are you willing to give up power?"

    Googleyness: That's what Google calls its cultural fit. It's not "Are you like us?" Bock said. "We actually look for people who are different, because diversity gives us great ideas."

    "What's most important is that people are intellectually humble, willing to admit when they're wrong, and care about the environment around them ...because we want people who think like owners not employees," Bock said.

Where am I? What am I doing? If you're one of my 500 friends online, you'll always be the first to know. My phone and laptop are never out of touching distance, so I'm endlessly checking through all my social networking apps - whether I'm having a coffee, on my way to school, watching TV. . even when I'm in the shower. I have a never - ending flow of messages and updates from all the people I associate with online. Yet the truth of the matter is: I feel lonely

I'm not the only person who feels this way. According to research, over two-thirds of young people find it easier to make friends online than it is "in real life". I'm a shy person, but I'm wired up (上线) every day, like most of my friends. On the surface, phones bring us closer together. But in reality, my mind is always a million miles away.

I often feel depressed, dissatisfied and alone. Since I spend so much time socializing online, I even become a procrastinator (拖延者). I keep postponing things that are important in my real life: homework, tasks, connecting with my friends and family members in a meaningful way. It's funny that my friends and I chatter away online so much, but we end up having nothing to say when we meet.

What is rally worrying is that no one I know, including myself. could go cold turkey. I can't even imagine going without social networking for a week - think of all the important appointments, invitations and news updates you would miss! Alcoholics (酗酒者) who want to quit drinking can avoid drinks, but how do we give up our phones? After all, I need it for my studies because my teachers and classmates need to contact me at any time. So, that's the problem with social networking. We're hard-wired in, but we're more disconnected than ever.

Tonya, Elsa and Mark are students at SAR Senior High School in New York City. It's a school with regular academic(学术的)classes, but it also gives special attention to the performing arts. Tonya likes dancing, Elsa wants to be an artist and Mark is a singer. 

The students are all 15,and they're in the 10th grade. They study subjects like English, maths, and science. They also choose a foreign language. Students have many academic classes, but during the school day they also take classes in the arts, like dance and music. 

There are even more activities for SAR students after school. There are more than 40 clubs for students. For example, there's a movie club, a music club and an environmental club. "We have so many choices to select," says Tonya. "I like taking photos. It's a so a great way to meet people with common interests. "

Students at SAR can also do many sports. For example, they can play basketball, tennis, volleyball and soccer. Students practice them after school. They compete against other high schools. Mark says, "At school, I study by myself. I'm a singer, and I do that alone, too. That's why I like playing on the basketball team. We work together and compete against other teams. "

SAR offers various great classes, clubs and sports to students. Students at SAR get a good education and they also develop their own interests. Many SAR students become dancers, singers and actors!

Dave McNee met Claudia Mandekic 14 years ago. When she told McNee how hard it could be to get students excited about math, her favourite discipline, he made a surprising suggestion: "Why not throw in something they enjoy, like sports?" The idea of mixing basketball and mathematics got its first shot in 2011, when the now colleagues — who had launched a tutoring non-profit — were invited to run a summer-school program for kids who'd failed Grade 9 math at Georges Secondary School.

When the students showed up for their first day, they weren't exactly excited. Over the next few hours, Mandekic and McNee gave the kids techniques to improve their shooting while also helping them calculate their field-goal percentage — which, in turn, taught them about fractions and decimal (分数和小数) points. At the end of the game, the winning team was determined based on which group had the highest total percentage and had done the most efficient math. "When the bell rang, they were so fixated on collecting their data and figuring out which team won that they didn't leave," says Mandekic. "I realized we might be onto something."

The classes, later named BallMatics, soon spread to other schools. "I was terrible at math," says Douglas, who enrolled in a fast-track summer program. "But once I started BallMatics and realized the sport I loved was directly tied to math, it made me a lot better at it. Every time I played basketball, I was thinking about math."

Almost any math problem, McNee and Mandekic realized, can be taught on the court. Kids can learn how to navigate an X-Y grid to find their next shooting spot or absorb the basic principles of trigonometry based on the angle at which they release the ball. In 2019, McNec and Mandekic established a private high school called Uchenna Academy. At the school, kids with top basketball skills can study all subjects, train at their sport and work part-time helping out with the BallMatics afterschool programs.

Douglas, now 20 and earning a degree in education believes the school's commitment to academics is the key reason it's been a winner. "If we didn't do our work, we weren't playing at the game," he says, adding that coaches would bench kids who didn't keep up in class. "At Uchenna, we were student athletes, not athlete students."