Robert Provine, a neuroscientist and professor of psychology at the University of Maryland, examines laughter as a means of exploring mechanisms and evolution of vocal production, perception and social behavior. He examines laugh structure, compares human to chimp laughter, sociolinguistic contexts of laughter, the contagiousness of laughter, and pinpoints directions for future study. This article, originally printed in American Scientist 84. 1 (Jan-Feb, 1996): 38-47, is a more in-depth, scholarly article than the other, related article on laughter that I posted: Provine's "The Science of Laughter."

Robert Provine, a neuroscientist and professor of psychology at the University of Maryland, summarizes a decade's worth of research in this article. He concludes that laughter is primarily a social vocalization that binds people together. It is a hidden language that we all speak. It is not a learned group reaction but an instinctive behavior programmed by our genes. Laughter bonds us through humor and play. He also explores gender differences in regard to the role of laughter in communication, also laughter as a tool in romance/pair-bonding.

Though newspaper style guides attempt to steer writers and editors through the trickier waters of the English language and try to confer consistency in grammar, punctuation and spelling, their well-intended prescriptivism may result in confusion and controversy. Take, for instance, the term "actor".

Although India has a rich linguistic history with more than 22 different national languages spoken throughout the length and breadth of the country, English has become its most popular language. English seems to be enjoying its youth in India, with the ubiquitous middle class of the country embracing the language as their own. It now serves as an integrating force and a link language which unites the country and provides a beacon of hope to youth.

Why has Twitter spawned a whole twitterverse of new words from tweet cred to twitterrhoea? This article examines the birth of Twitter-based neologisms, offering some theories underlying the surge of tw- prefixed words.

Many acronyms meant to be written have wormed their way into spoken language - just ask your BFF, or the co-worker who prefaces everything with "FYI." Lately, this is also the case for Internet slang. Whether the practice will leave a permanent mark on the language remains to be seen.

The Rap Genius website annotates rap lyrics: creators hope to provide a hip-hop Wikipedia. You can listen to songs, read lyrics, and click the lines that interest you for pop-up explanations. Like Wikipedia, you can also create and annotate entries.

Santiago Swallow is "a Mexican-born, American motivational speaker, consultant, educator, and author, whose speeches and publications focus on understanding modern culture in the age of social networking, globally interconnected media, user generated content and the Internet," and has "dedicated himself to helping others know more about how media and personality can manipulated in the 21st Century." Though completely fictional, he boasts a Wikipedia biography and a Twitter account with tens of thousands of followers. Making up-or at least "enhancing"-an identity like this is something real people do to increase their reputation, look popular, and sell themselves. There are equally real people who profit from this by selling fake followers created by software at the push of a button. Be afraid.

This blog has various articles re: the overlapping themes of race, ethnicity and culture, how they play out in our lives and communities, and how all of this is shifting. Recent posts include the role of Asians in hip-hop, popular media and code-switching.

Author Sena Moore writes about how music can re-wire our brains for speech. Singing and speaking activate similar areas on both sides of the brain, primarily in the motor production and sensory feedback areas. Singing, however, also activates the right hemisphere in some areas more strongly than the left. Speech is a left-hemisphere-dominate function. In other words, similar networks in the brain associated with vocal production are activated when a person is singing and when s/he is speaking. And the "stronger right hemisphere" activation supports the clinical observation that those who cannot speak because of damage to the left hemisphere speech areas known as Broca's area can still produce words by singing them.

Northwestern University researchers, led by Dr Nina Kraus, found that poor readers had reduced neural response (auditory brainstem activity) to rhythmic rather than random sounds compared to good readers. In fact the level of neural enhancement to acoustic regularities correlated with reading ability as well as musical aptitude. The musical ability test, specifically the rhythm aspect, was also related to reading ability. Similarly a good score on the auditory working memory related to better reading and to the rhythm aspect of musical ability. Dr Kraus explained, "Both musical ability and literacy correlated with enhanced electrical signals within the auditory brainstem. Structural equation modeling of the data revealed that music skill, together with how the nervous system responds to regularities in auditory input and auditory memory/attention accounts for about 40% of the difference in reading ability between children. These results add weight to the argument that music and reading are related via common neural and cognitive mechanisms and suggests a mechanism for the improvements in literacy seen with musical training."

Researchers at Harvard University have found that humans aren't the only ones who can groove to a beat - some other species can dance, too. The capability was previously believed to be specific to humans. The research team found that only species with the capacity for vocal mimicry, that is, copying sound, seem capable of beat induction, the ability to discern the beat in music. Beat induction also enables such actions as clapping, making music together and dancing to a rhythm. The data suggests that some of the brain mechanisms needed for human dance may have originally evolved to allow us to imitate sound.

According to research led by V. S. Ramachandran, director of the Center for Brain and Cognition at the University of California, San Diego, a region of the brain known as the angular gyrus is probably at least partly responsible for the human ability to understand metaphor. Ramachandran and colleagues tested four right-handed patients with damage to the left angular gyrus. Fluent in English and otherwise intelligent and mentally lucid, the patients showed gross deficits in comprehending such common proverbs as "the grass is always greener on the other side" and "an empty vessel makes more noise." Asked to explain the sayings, the patients tended give responses that were literal. The metaphorical meaning escaped them almost entirely.

Recent studies suggest that metaphors are more than just fancy literary devices and that there is a psychological basis for linking cold with feelings of social isolation. Psychologists Chen-Bo Zhong and Geoffrey Leonardelli from the University of Toronto's Rotman School of Management wanted to test the idea that social isolation might generate a physical feeling of coldness. In their first experiment, they divided a group of volunteers into two groups. One group recalled a personal experience in which they had been socially excluded-rejection from a club, for example. This was meant to tap into their feelings of isolation and loneliness. The other group recalled an experience in which they had been accepted into a group. Afterwards, volunteers were asked to estimate the temperature in the room. Those who recalled memories of being ostracized experienced the ambient temperature of the room as colder. In a second experiment, researchers triggered feelings of exclusion by having volunteers play a computer-simulated ball tossing game. The game was designed so that some of the volunteers had the ball tossed to them many times, but others were left out. Afterwards, all the volunteers rated the desirability of certain foods and beverages: hot coffee, crackers, an ice-cold Coke, an apple, and hot soup. The findings were striking. As reported in the September issue of Psychological Science, a journal of the Association for Psychological Science, the "unpopular" volunteers who had been ostracized during the computer game were much more likely than the others to want either hot soup or hot coffee. Their preference for warm food and drinks presumably resulted from physically feeling cold as a result of being excluded. "It's striking that people preferred hot coffee and soup more when socially excluded," Leonardelli said. "Our research suggests that warm chicken soup may be a literal coping mechanism for social isolation."

When people talk about positive and negative emotions they often use spatial metaphors. A happy person is on top of the world, but a sad person is down in the dumps. Some researchers believe these metaphors are a clue to the way people understand emotions: not only do we use spatial words to talk about emotional states, we also use spatial concepts to think about them. Researchers Daniel Casasanto (MPI and Donders Institute, Nijmegen) and Katinka Dijkstra (Erasmus University, Rotterdam) ran 2 experiments. In the first experiment, students had to move glass marbles upward or downward into one of two cardboard boxes, with both hands simultaneously, timed by a metronome. Meanwhile, they had to recount autobiographical memories with either positive or negative emotional valence, like "Tell me about a time when you felt proud of yourself', or 'a time when you felt ashamed of yourself.' Moving marbles upward caused participants to remember more positive life experiences, and moving them downward to remember more negative experiences. Memory retrieval was most efficient when participants' motions matched the spatial directions that metaphors in language associate with positive and negative emotions. The second experiment tested whether seemingly meaningless motor actions, e.g. moving marbles up or down, could influence the content of people's memories. Participants were given neutral-valence prompts, like "Tell me about something that happened during high school," so they could choose to retell something happy or sad. Their choices were determined, in part, by the direction in which they were assigned to move marbles. Moving marbles upward encouraged students to recount positive high school experiences like "winning an award," but moving them downward to recall negative experiences like "failing a test." "These data suggest that spatial metaphors for emotion aren't just in language," Casasanto says, "linguistic metaphors correspond to mental metaphors, and activati

New brain imaging research at Emory University reveals that a region of the brain important for sensing texture through touch, the parietal operculum, is also activated when someone listens to a sentence with a textural metaphor. The same region is not activated when a similar sentence expressing the meaning of the metaphor is heard.

Researchers Tyler G. Okimoto, Michael Wenzel and Kyli Hedrick reported on what they've found happens in people's minds when they refuse to apologize. "We do find that apologies do make apologizers feel better, but the interesting thing is that refusals to apologize also make people feel better and, in fact, in some cases it makes them feel better than an apology would have," Okimoto said in an interview. He believes the research, in fact, may provide a clue on how best to get people to apologize. Our conventional approach, especially with kids, is to force people to apologize. But if people are reluctant to apologize because apologies make them feel threatened, coercion is unlikely to help - that is, if a sincere apology is hoped for.

A group of anthropologists from England used a computer program to analyze the emotional content of books from every year of the 20th century - close to a billion words in millions of books. Researchers found that the Twenties marked the apex of joy-related words; the overall usage of commonly known emotion words, however, has been in decline over the 20th century. The one exception: "fear", which started to increase just before the 1980s.

The consensus among sociologists and psychologists who study online behavior is that all kinds of people can become trolls-not just the unwound, the immature or the irate. The Internet's anonymity produces the "disinhibition effect," in which "the frequency of self-interested unethical behavior increases among anonymous people." Online communication causes users to feel 'distant' from the people they're speaking to, and less focused on their own identities, resulting in increased aggressive behavior.

The article recaps several studies suggesting that the habits encouraged by mobile technology - namely, talking in public to someone who is not there - are tailor made for hijacking the cognitive functions of bystanders.