Psychologists have long known that feelings can be contagious over short time frames or that people reflexively return smiles. But the new social network analysis showed that that contagious effect extends three "degrees" - as far as a friend of a friend of a friend - and drops off with time and distance.

All in all, it's a lot easier to save money if you adopt a lifestyle a few notches below your earnings capacity. If you try it the other way around - spending all you make (or more) right out of the gate - then saving will require painful cutbacks from the lifestyle you've gotten used to. And the sad truth is, many people never make that adjustment.

The studies found that an opinion is more likely to be assumed to be the majority opinion when multiple group members express their opinion. However, the study also showed that hearing one person express the same opinion multiple times had nearly the same effect on listener's perception of the opinion being popular as hearing multiple people state his/her opinion.

Intrigued, Yuki decided to study this phenomenon. First, he and his colleagues asked groups of American and Japanese students to rate how happy or sad various computer-generated emoticons seemed to them. As Yuki predicted, the Japanese gave more weight to the emoticons' eyes when gauging emotions, whereas Americans gave more weight to the mouth. For example, the American subjects rated smiling emoticons with sad-looking eyes as happier than the Japanese subjects did.

When the dogs saw their owners, their tails all wagged vigorously with a bias to the right side of their bodies, Dr. Vallortigara said. Their tails wagged moderately, again more to the right, when faced with an unfamiliar human. Looking at the cat, a four-year-old male whose owners volunteered him for the experiment, the dogs' tails again wagged more to the right but in a lower amplitude.

Part of the reason is that names provide a powerful image of a person and influence people's reactions to them. An Isabella is less likely to study maths, according to the theory, because people would not expect her to. 'There are plenty of exceptions but, on average, people treat Isabellas differently to Alexes,' commented David Figlio, professor of economics at the University of Florida and the author of the report. 'Girls with feminine names were often typecast.' Figlio pointed to the controversy that arose over the first talking Barbie's phrase, 'math is hard'. 'It is a stereotype, and girls with particularly feminine names may feel more pressure to avoid technical subjects,' he said. Not that they were any less capable. When the Isabellas, Annas and Elizabeths took on their tougher-named peers in science, they performed just as well.

Prediction #9: Photographs will be telegraphed from any distance. If there be a battle in China a hundred years hence snapshots of its most striking events will be published in the newspapers an hour later. Even to-day photographs are being telegraphed over short distances. Photographs will reproduce all of Nature’s colors.

Prediction #10: Man will See Around the World. Persons and things of all kinds will be brought within focus of cameras connected electrically with screens at opposite ends of circuits, thousands of miles at a span. American audiences in their theatres will view upon huge curtains before them the coronations of kings in Europe or the progress of battles in the Orient. The instrument bringing these distant scenes to the very doors of people will be connected with a giant telephone apparatus transmitting each incidental sound in its appropriate place. Thus the guns of a distant battle will be heard to boom when seen to blaze, and thus the lips of a remote actor or singer will be heard to utter words or music when seen to move.

Prediction #18: Telephones Around the World. Wireless telephone and telegraph circuits will span the world. A husband in the middle of the Atlantic will be able to converse with his wife sitting in her boudoir in Chicago. We will be able to telephone to China quite as readily as we now talk from New York to Brooklyn. By an automatic signal they will connect with any circuit in their locality without the intervention of a "hello girl".