Wall Street rebounds on House session, but off for 4th day

NEW YORK (Reuters) - Stocks fell for a fourth day on Thursday, but recovered most of their losses after the House of Representatives, in the barest sign of progress, said it would come back to work on avoiding the "fiscal cliff" this weekend.

It was a jittery session for stocks, with shares falling more than 1 percent after Senate Majority Harry Reid warned a deal was unlikely before the deadline, only to rebound merely on the news that the House would reconvene Sunday, a day before the December 31 "cliff" deadline.

"There's no conviction in the move or the overall market, based on the across-the-board reduction we've seen in volume ... but there will be continued weakness until there's sustained positive direction coming from our leaders," said Joseph Cangemi, managing director at ConvergEx Group, in New York.

The market has been prone to quick reactions to headlines and those moves have sometimes seemed more dramatic because of reduced trading volume. About 5.18 billion shares changed hands on the New York Stock Exchange, the Nasdaq and the NYSE MKT, well below the daily average so far this year of about 6.48 billion shares.

Investors are looking for any hint that lawmakers will avert the $600 billion in tax hikes and spending cuts that will start to take effect next week and could push the U.S. economy into recession.

"Markets turned around in a heartbeat, as the House session is the first announcement of anything getting done," said Randy Bateman, chief investment officer of Huntington Asset Management, in Columbus, Ohio, which oversees $14.5 billion in assets. "I'm not convinced it will result in a deal, but you could get enough concessions by both parties to at least avoid the immediacy of going over the cliff."

In a sign of the anxiety, the CBOE Volatility Index <.vix>, or VIX, rose above 20 for the first time since July, suggesting rising worries, but ended up finishing the day down 0.4 percent as the stock market rebounded.

Stocks in the materials and the financial sectors, which are more vulnerable to the economy's performance, bore the brunt of the selling before recovering. Shares of Bank of America fell 0.6 percent to $11.47 while Freeport-McMoRan Copper & Gold fell 0.7 percent to $33.68.

Some of 2012's biggest gainers bucked the broader trend and rallied, a sign of year-end "window dressing." Expedia Inc was the S&P 500's top percentage gainer, climbing 4.1 percent to $60.30. The price of the online travel agency's stock has doubled this year.

The Dow Jones industrial average <.dji> slipped 18.28 points, or 0.14 percent, to 13,096.31 at the close. The Standard & Poor's 500 Index <.spx> declined 1.73 points, or 0.12 percent, to end at 1,418.10. The Nasdaq Composite Index <.ixic> dropped 4.25 points, or 0.14 percent, to close at 2,985.91.

Marvell Technology Group fell 3.5 percent to $7.14 after it said it would seek to overturn a jury's finding of patent infringement. The stock had fallen more than 10 percent in the previous session after a jury found the company infringed on patents held by Carnegie Mellon University and ordered the chipmaker to pay $1.17 billion in damages.

The four-day decline marked the S&P 500's longest losing streak in three months. The index has lost 1.8 percent over the period as investors grapple with the possibility that a deal may not be reached until next year.

President Barack Obama arrived back in Washington from Hawaii to restart stalled negotiations with Congress. House Speaker John Boehner and other Republican leaders were to hold a conference call with Republican lawmakers. The expectation was that lawmakers would be told to get back to Washington quickly if the Senate passed a bill.

Treasury Secretary Timothy Geithner announced the first of a series of measures that should push back the date when the U.S. government will hit its legal borrowing authority - a limit known as the debt ceiling - by about two months.

Economic data seemed to confirm worries about the impact of the fiscal cliff on the economy.

The Conference Board, an industry group, said its index of consumer confidence in December fell to 65.1 as the budget crisis dented growing optimism about the economy. The gauge fell more than expected from 71.5 in November.

However, the job market continues to mend. Initial claims for unemployment benefits dropped 12,000 to a seasonally adjusted 350,000 last week and the four-week moving average fell to the lowest since March 2008.

Decliners outnumbered advancers on the New York Stock Exchange by a ratio of about 8 to 7, while on the Nasdaq, about 14 stocks fell for every 11 that rose.

(Editing by Jan Paschal)

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Putin to Sign Ban on U.S. Adoptions of Russian Children

MOSCOW — President Vladimir V. Putin said Thursday that he would sign into law a bill banning adoptions of Russian children by American citizens, retaliating against a new American law that seeks to punish human rights abuses in Russia and dealing a serious blow to bilateral relations after a year in which ties have become increasingly strained.

Most immediately, though, the ban stands to upend the plans of dozens of American families in the final stages of adopting children in Russia, adding wrenching emotional tumult to a process that can cost $50,000 or more, requires repeated trips overseas, and even under the best of circumstances typically entails lengthy and maddening bureaucracy.

Although his decision has been eagerly awaited, Mr. Putin seemed rather blasé at a meeting with senior government officials on Thursday that included cabinet members, legislative leaders and governors. When Vladimir S. Gruzdev, the governor of the Tula region, said, “I would like to ask, what is the fate of the law?” Mr. Putin replied curtly, “Which law?”

The adoption ban, included in a broader law aimed at retaliating against the United States, was approved unanimously by the Federation Council, the upper chamber of Parliament, on Wednesday. Mr. Putin went on to say that he would sign the bill and a decree also adopted on Wednesday, calling for improvements in Russia’s child welfare system.

“I intend to sign the law,” Mr. Putin said, “as well as a presidential decree changing the procedure of helping orphaned children, children left without parental care, and especially children who are in a disadvantageous situation due to their health problems.”

Mr. Putin also brushed aside criticism that the law would deny some Russian orphans the chance for a much better life in the United States. In 2011, about 1,000 Russian children were adopted to America, more than to any other foreign country, but still a tiny number given that nearly 120,000 children in Russia are eligible for adoption.

“There are probably many places in the world where living standards are better than ours,” Mr. Putin said. “So what? Shall we send all children there, or move there ourselves?”

United States officials have strongly criticized the measure and have urged the Russian government not to enmesh orphaned children in politics. “We have repeatedly made clear, both in private and in public, our deep concerns about the bill passed by the Russian Parliament,” a State Department spokesman, Patrick Ventrell, said on Thursday. “Since 1992 American families have welcomed more than 60,000 Russian children into their homes, and it is misguided to link the fate of children to unrelated political considerations.”

Internally, however, Obama administration officials have been engaged in a debate over how strongly to respond to the adoption ban, and how to assess the potential implications for other aspects of the country’s relationship with Russia.

The United States, for instance, now relies heavily on overland routes through Russia to ship supplies to military units in Afghanistan, and has enlisted Russia’s help in containing Iran’s nuclear program. The former cold war rivals also have sharp disagreements, notably over the civil war in Syria.

And with the White House and Congress heavily focused on the fiscal debate in Washington, there seems to be little room for developing a more forceful response on the adoption issue.

The news led to shock and despair among the hundreds of American families waiting to adopt a Russian child.

“I’m a little numb,” said Maria Drewinsky, a massage therapist from Sea Cliff, N.Y., who was in the final stages of adopting Alyosha, 5, has flown twice to visit him and speaks to him weekly on the telephone. “We have clothes and a bedroom all set up for him, and we talk about him all the time as our son.”

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Mint, otro Linux para quienes quieren explorar el mundo fuera de Windows

Una de las grandes virtudes de Linux (un sistema operativo libre para PC y otros dispositivos) es la cantidad innumerable de versiones disponibles. Estas distribuciones, además, son en su enorme mayoría de uso gratis, y representan una buena alternativa para los que no desean invertir en una licencia de Windows o quieren explorar -sin gastar- alternativas para la computadora hogareña.

Hemos recomendado en varias ocasiones opciones sencillas de usar e instalar que tienen herramientas iguales o muy similares a las que pueden encontrarse en Windows, destacando la ductilidad de las distribuciones disponibles y cómo hacer para probarlas sin complicarse demasiado , usando un CD regrabable o un pendrive, para no afectar el Windows instalado en la computadora.

En los últimos años fue Ubuntu el que más hizo para facilitarle el trabajo a los neófitos que venían de Windows, automatizando y simplificando procesos de instalación, creando un sitio amigable, sumando instrucciones de instalación y uso en lenguaje no técnico e incluso haciendo acuerdo para preinstalarlo en equipos de marca , pero la elección de la interfaz de usuario Unity (algo rígida) le hizo perder adeptos.

Una de las alternativas que venía creciendo en popularidad era Linux Mint (gratis), y los últimos números de DistroWatch , un sitio que lista las diferentes distribuciones y su popularidad, lo dan como el rey de 2012. Mint usa a Ubuntu como base, por lo que aprovecha algunas de sus herramientas (como la que permite instalarlo dentro de Windows para poder usarlo sin afectar la instalación original) y viene con una gran cantidad de componentes multimedia preinstalados, para facilitar la reproducción de audio y video, entre otras cosas (las distribuciones más “puras” suelen evitar esto para promover el uso de estándares libres de audio y video).

Hace poco más de un mes Linux Mint liberó su versión más reciente, Nadia 14, que incluye dos entornos de escritorio que resultarán muy agradables para quienes no se sienten cómodos con Unity, porque mantienen el esquema tradicional de Windows y Gnome 2.x: una barra de herramientas en la parte inferior de la pantalla, ventanas con los botones de control a la derecha, etcétera.

Linux Mint 14 tiene dos versiones: MATE (basado en Gnome 2.x, y cuyo nombre está inspirado en la yerba mate) y Cinnamon (canela, en inglés) de aspecto similar pero con algunos detalles visuales más atractivos: menús de notificaciones más sofisticados, escritorios virtuales persistentes, miniaturas en el administrador de ventanas y más.

cómo instalarlo

Cualquiera de ellas se puede meter en un pendrive o disco externo y correr desde allí o, si se quiere, instalarlas en la PC, junto con Windows (es compatible con Windows 8) o en una partición nueva. Alcanza con descargar el archivo ISO de instalación (hay uno para MATE y otro para Cinnamon). Ese archivo (900 MB, aproximadamente) se puede grabar en un DVD con una aplicación para quemar imágenes de disco: en Windows está el freeware CDBurnerXP , por ejemplo. Con el disco en la lectora, al encender al PC debería cargar primero Mint antes que Windows (si no, habrá que cambiar una configuración en el BIOS). Podremos usarlo como si estuviera instalado en la PC y luego, si queremos, instalarlo en el disco rígido de nuestra computadora, cuidando de hacerlo en una partición vacía o dentro de Windows.

Otra opción es instalarlo en una memoria USB (de 2 GB o más de capacidad). Para eso hay que usar la aplicación Image Writer (gratis, hay que cliquear donde dice win32diskimager-binary.zip para descargar el archivo). Luego habrá que cambiar la extensión del archivo de .ISO a .IMG para que Image Writer reconozca el archivo y pueda copiarlo en el pendrive (atención que borrará todo lo que está allí).

Si al prender la PC con el pendrive conectado no lo reconoce, habrá que cambiar el orden de carga de sistemas operativos, una opción que suele aparecer apenas se prende la PC (y que no estará disponible si la computadora es muy vieja) para ordenarle que cargue primero el contenido de la memoria USB.

Para quienes estén pensando en probar una distribución de Linux y buscan reducir el “choque cultural” con una interfaz de usuario que sea parecida -pero no idéntica- a la del Windows tradicional, y que además sea sencillo de usar, tienen en Linux Mint 14 Nadia una opción muy atractiva.

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Channing Tatum Cradles Wife Jenna Dewan-Tatum's Baby Bump

By Marla Lehner

12/26/2012 at 06:40 PM EST

Channing Tatum is already being sweet with his baby.

PEOPLE's Sexiest Man Alive, who announced earlier this month that he and his wife are expecting their first child, posted an adorable picture of himself cradling Jenna Dewan-Tatum's growing baby bump on Christmas Day.

"Merry Christmas," the Magic Mike hunk wrote on his WhoSay page where he shared the photo of the couple, both 32, smiling and dressed in matching baseball caps.

On Christmas Eve, Dewan-Tatum Tweeted a holiday message to her followers, saying, "Merry Christmas and happy holidays to you all!! Hope you are having fun with loved ones! Xox."

Discussing starting a family, "I'm ready; I think she’s ready," Tatum told PEOPLE recently. "The first number that pops into my head is three, but I just want one to be healthy and then we'll see where we go after that."

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Predicting who's at risk for violence isn't easy

CHICAGO (AP) — It happened after Columbine, Virginia Tech, Aurora, Colo., and now Sandy Hook: People figure there surely were signs of impending violence. But experts say predicting who will be the next mass shooter is virtually impossible — partly because as commonplace as these calamities seem, they are relatively rare crimes.

Still, a combination of risk factors in troubled kids or adults including drug use and easy access to guns can increase the likelihood of violence, experts say.

But warning signs "only become crystal clear in the aftermath, said James Alan Fox, a Northeastern University criminology professor who has studied and written about mass killings.

"They're yellow flags. They only become red flags once the blood is spilled," he said.

Whether 20-year-old Adam Lanza, who used his mother's guns to kill her and then 20 children and six adults at their Connecticut school, made any hints about his plans isn't publicly known.

Fox said that sometimes, in the days, weeks or months preceding their crimes, mass murderers voice threats, or hints, either verbally or in writing, things like "'don't come to school tomorrow,'" or "'they're going to be sorry for mistreating me.'" Some prepare by target practicing, and plan their clothing "as well as their arsenal." (Police said Lanza went to shooting ranges with his mother in the past but not in the last six months.)

Although words might indicate a grudge, they don't necessarily mean violence will follow. And, of course, most who threaten never act, Fox said.

Even so, experts say threats of violence from troubled teens and young adults should be taken seriously and parents should attempt to get them a mental health evaluation and treatment if needed.

"In general, the police are unlikely to be able to do anything unless and until a crime has been committed," said Dr. Paul Appelbaum, a Columbia University professor of psychiatry, medicine and law. "Calling the police to confront a troubled teen has often led to tragedy."

The American Academy of Child & Adolescent Psychiatry says violent behavior should not be dismissed as "just a phase they're going through."

In a guidelines for families, the academy lists several risk factors for violence, including:

—Previous violent or aggressive behavior

—Being a victim of physical or sexual abuse

—Guns in the home

—Use of drugs or alcohol

—Brain damage from a head injury

Those with several of these risk factors should be evaluated by a mental health expert if they also show certain behaviors, including intense anger, frequent temper outbursts, extreme irritability or impulsiveness, the academy says. They may be more likely than others to become violent, although that doesn't mean they're at risk for the kind of violence that happened in Newtown, Conn.

Lanza, the Connecticut shooter, was socially withdrawn and awkward, and has been said to have had Asperger's disorder, a mild form of autism that has no clear connection with violence.

Autism experts and advocacy groups have complained that Asperger's is being unfairly blamed for the shootings, and say people with the disorder are much more likely to be victims of bullying and violence by others.

According to a research review published this year in Annals of General Psychiatry, most people with Asperger's who commit violent crimes have serious, often undiagnosed mental problems. That includes bipolar disorder, depression and personality disorders. It's not publicly known if Lanza had any of these, which in severe cases can include delusions and other psychotic symptoms.

Young adulthood is when psychotic illnesses typically emerge, and Appelbaum said there are several signs that a troubled teen or young adult might be heading in that direction: isolating themselves from friends and peers, spending long periods alone in their rooms, plummeting grades if they're still in school and expressing disturbing thoughts or fears that others are trying to hurt them.

Appelbaum said the most agonizing calls he gets are from parents whose children are descending into severe mental illness but who deny they are sick and refuse to go for treatment.

And in the case of adults, forcing them into treatment is difficult and dependent on laws that vary by state.

All states have laws that allow some form of court-ordered treatment, typically in a hospital for people considered a danger to themselves or others. Connecticut is among a handful with no option for court-ordered treatment in a less restrictive community setting, said Kristina Ragosta, an attorney with the Treatment Advocacy Center, a national group that advocates better access to mental health treatment.

Lanza's medical records haven't been publicly disclosed and authorities haven't said if it is known what type of treatment his family may have sought for him. Lanza killed himself at the school.

Jennifer Hoff of Mission Viejo, Calif. has a 19-year-old bipolar son who has had hallucinations, delusions and violent behavior for years. When he was younger and threatened to harm himself, she'd call 911 and leave the door unlocked for paramedics, who'd take him to a hospital for inpatient mental care.

Now that he's an adult, she said he has refused medication, left home, and authorities have indicated he can't be forced into treatment unless he harms himself — or commits a violent crime and is imprisoned. Hoff thinks prison is where he's headed — he's in jail, charged in an unarmed bank robbery.

___

Online:

American Academy of Child & Adolescent Psychiatry: http://www.aacap.org

___

AP Medical Writer Lindsey Tanner can be reached at http://www.twitter.com/LindseyTanner

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Wall Street drops in thin session, led by retailers

NEW YORK (Reuters) - Stocks fell for a third straight day on Wednesday, dragged lower by retail stocks after a report showed consumers spent less in the holiday shopping season than last year.

Trading was light, with volume at a mere 4.01 billion shares traded on the New York Stock Exchange, the Nasdaq and NYSE MKT, well below the daily average so far this year of about 6.48 billion shares. The day's volume was the lightest full day of trading so far in 2012. Many senior traders were still on vacation during this holiday-shortened week and major European markets were closed for the day.

Many investors said concerns about the "fiscal cliff" kept shoppers away from stores, suggesting markets may struggle to gain any ground until that issue is resolved. The CBOE Volatility Index <.vix> or VIX, Wall Street's favorite barometer of investor anxiety, rose 4.46 percent, closing above 19 for the first time since November 7.

A number of 2012's strongest performers advanced, a sign that portfolio managers may be engaging in "window dressing," a practice where market participants buy securities with big gains to improve the appearance of their holdings before presenting the results to clients. Bank of America Corp , which has more than doubled in 2012, added 2.6 percent to $11.54 on Wednesday.

Holiday-related sales rose 0.7 percent from October 28 through December 24, compared with a 2 percent increase last year, according to data from MasterCard Advisors SpendingPulse. The Morgan Stanley retail index <.mvr> skidded 1.8 percent while the SPDR S&P Retail Trust slipped 1.7 percent.

"With the 'fiscal cliff' hanging over our heads, it was hard to convince people to shop, and now it's hard to convince investors that there's any reason to buy going into year-end," said Rick Fier, director of trading at Conifer Securities in New York, which has about $12 billion in assets under administration.

President Barack Obama is due back in Washington early Thursday for a final effort to negotiate a deal with Congress to bridge a series of tax increases and government spending cuts set to begin next week, the so-called "fiscal cliff" many economists worry could push the U.S. economy into recession if it takes effect.

Coach Inc fell 5.9 percent to $54.13 as the S&P 500's biggest decliner, followed by Amazon.com , down 3.9 percent at $248.63, and Abercrombie & Fitch , off 3.5 percent at $45.44. Ralph Lauren Corp , Limited Brands and Gap Inc also ranked among the S&P 500's biggest decliners.

The Dow Jones industrial average <.dji> slipped 24.49 points, or 0.19 percent, to 13,114.59 at the close. The Standard & Poor's 500 Index <.spx> shed 6.83 points, or 0.48 percent, to 1,419.83. The Nasdaq Composite Index <.ixic> dropped 22.44 points, or 0.74 percent, to 2,990.16.

J.C. Penney Co was a notable exception to the weakness in retail stocks, surging 4.4 percent to $20.75 as the S&P 500's biggest gainer. It was followed closely by Bank of America and Genworth Financial , which each gained nearly 3 percent for the day.

"People want to show they own names like these, making them prime 'window dressing' candidates," said Wayne Kaufman, chief market analyst at John Thomas Financial in New York.

"Bank of America keeps going up even though it's overbought and you'd expect a pullback at these levels. No one wanted it when it was under $10 a share, but they want it now."

The S&P 500 has fallen 1.5 percent over the past three sessions, the worst three-day decline since mid-November. The Dow Jones Transportation Average <.djt>, viewed as a proxy for business activity, fell 0.6 percent.

A Republican plan that failed to gain traction last week triggered the S&P 500's recent drop, highlighting the market's sensitivity to headlines centered on the budget talks.

During the last five trading days of the year and the first two of next year, it's possible for a "Santa rally" to occur. Since 1928, the S&P 500 has averaged a gain of 1.8 percent during that period and risen 79 percent of the time, according to data from PrinceRidge.

"While it's unlikely there could be a budget deal at any time, no one wants to get in front of that trade," said Conifer's Fier. "Investors can easily make up for any gains when there's more action in 2013."

Data showed U.S. single-family home prices rose in October, reinforcing the view that the domestic real estate market is improving, as the S&P/Case-Shiller composite index of 20 metropolitan areas gained 0.7 percent in October on a seasonally adjusted basis.

Decliners outnumbered advancers on the New York Stock Exchange by a ratio of about 2 to 1, while on the Nasdaq, more than five stocks fell for every three that rose.

(Editing by Jan Paschal)

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Bolivia Makes Inroads Toward Reducing Coca Production

Meri Pintas, 30, center, harvests coca leaves with her children in the Yungas region of Bolivia. Bolivia, the world’s third-largest cocaine producer, has advanced its own unorthodox approach toward controlling the growing of coca, which veers markedly from the wider war on drugs and includes high-tech monitoring of thousands of legal coca patches intended to produce coca leaf for traditional uses.

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Tajikistan blocks scores of websites as election looms

DUSHANBE (Reuters) – Tajikistan blocked access to more than 100 websites on Tuesday, in what a government source said was a dress rehearsal for a crackdown on online dissent before next year’s election when President Imomali Rakhmon will again run for office.

Rakhmon, a 60-year-old former head of a Soviet cotton farm, has ruled the impoverished Central Asian nation of 7.5 million for 20 years. He has overseen constitutional amendments that allow him to seek a new seven-year term in November 2013.

The Internet remains the main platform where Tajiks can air grievances and criticize government policies at a time when the circulation of local newspapers is tiny and television is tightly controlled by the state.

Tajikistan’s state communications service blocked 131 local and foreign Internet sites “for technical and maintenance works”.

“Most probably, these works will be over in a week,” Tatyana Kholmurodova, deputy head of the service, told Reuters. She declined to give the reason for the work, which cover even some sites with servers located abroad.

The blocked resources included Russia‘s popular social networking sites www.my.mail.ru and VKontakte (www.vk.com), as well as Tajik news site TJKnews.com and several local blogs.

“The government has ordered the communications service to test their ability to block dozens of sites at once, should such a need arise,” a senior government official told Reuters on condition of anonymity.

“It is all about November 2013,” he said, in a clear reference to the presidential election.

Other blocked websites included a Ukrainian soccer site, a Tajik rap music site, several local video-sharing sites and a pornography site.

VOLATILE NATION

Predominantly Muslim Tajikistan, which lies on a major transit route for Afghan drugs to Europe and Russia, remains volatile after a 1992-97 civil war in which Rakhmon’s Moscow-backed secular government clashed with Islamist guerrillas.

Rakhmon justifies his authoritarian methods by saying he wants to oppose radical Islam. But some of his critics argue repression and poverty push many young Tajiks to embrace it.

Tighter Internet controls echo measures taken by other former Soviet republics of Central Asia, where authoritarian rulers are wary of the role social media played in revolutions in the Arab world and mass protests in Russia.

The government this year set up a volunteer-run body to monitor Internet use and reprimand those who openly criticize Rakhmon and other officials.

In November, Tajikistan blocked access to Facebook, saying it was spreading “mud and slander” about its veteran leader.

The authorities unblocked Facebook after concern was expressed by the United States and European Union, the main providers of humanitarian aid for Tajikistan, where almost a half of the population lives in abject poverty.

Asomiddin Asoyev, head of Tajikistan’s association of Internet providers, said authorities were trying to create an illusion that there were no problems in Tajik society by silencing online criticism.

“This is self-deception,” he told Reuters. “The best way of resolving a problem is its open discussion with civil society.”

Moscow-based Central Asia expert Arkady Dubnov told Reuters that Rakhmon’s authoritarian measures could lead to a backlash against the president in the election. “Trying to position itself as the main guarantor of stability through repression against Islamist activists, the Dushanbe government is actually achieving the reverse – people’s trust in it is falling,” he said.

(Writing by Dmitry Solovyov; Editing by Pravin Char)

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Predicting who's at risk for violence isn't easy

CHICAGO (AP) — It happened after Columbine, Virginia Tech, Aurora, Colo., and now Sandy Hook: People figure there surely were signs of impending violence. But experts say predicting who will be the next mass shooter is virtually impossible — partly because as commonplace as these calamities seem, they are relatively rare crimes.

Still, a combination of risk factors in troubled kids or adults including drug use and easy access to guns can increase the likelihood of violence, experts say.

But warning signs "only become crystal clear in the aftermath, said James Alan Fox, a Northeastern University criminology professor who has studied and written about mass killings.

"They're yellow flags. They only become red flags once the blood is spilled," he said.

Whether 20-year-old Adam Lanza, who used his mother's guns to kill her and then 20 children and six adults at their Connecticut school, made any hints about his plans isn't publicly known.

Fox said that sometimes, in the days, weeks or months preceding their crimes, mass murderers voice threats, or hints, either verbally or in writing, things like "'don't come to school tomorrow,'" or "'they're going to be sorry for mistreating me.'" Some prepare by target practicing, and plan their clothing "as well as their arsenal." (Police said Lanza went to shooting ranges with his mother in the past but not in the last six months.)

Although words might indicate a grudge, they don't necessarily mean violence will follow. And, of course, most who threaten never act, Fox said.

Even so, experts say threats of violence from troubled teens and young adults should be taken seriously and parents should attempt to get them a mental health evaluation and treatment if needed.

"In general, the police are unlikely to be able to do anything unless and until a crime has been committed," said Dr. Paul Appelbaum, a Columbia University professor of psychiatry, medicine and law. "Calling the police to confront a troubled teen has often led to tragedy."

The American Academy of Child & Adolescent Psychiatry says violent behavior should not be dismissed as "just a phase they're going through."

In a guidelines for families, the academy lists several risk factors for violence, including:

—Previous violent or aggressive behavior

—Being a victim of physical or sexual abuse

—Guns in the home

—Use of drugs or alcohol

—Brain damage from a head injury

Those with several of these risk factors should be evaluated by a mental health expert if they also show certain behaviors, including intense anger, frequent temper outbursts, extreme irritability or impulsiveness, the academy says. They may be more likely than others to become violent, although that doesn't mean they're at risk for the kind of violence that happened in Newtown, Conn.

Lanza, the Connecticut shooter, was socially withdrawn and awkward, and has been said to have had Asperger's disorder, a mild form of autism that has no clear connection with violence.

Autism experts and advocacy groups have complained that Asperger's is being unfairly blamed for the shootings, and say people with the disorder are much more likely to be victims of bullying and violence by others.

According to a research review published this year in Annals of General Psychiatry, most people with Asperger's who commit violent crimes have serious, often undiagnosed mental problems. That includes bipolar disorder, depression and personality disorders. It's not publicly known if Lanza had any of these, which in severe cases can include delusions and other psychotic symptoms.

Young adulthood is when psychotic illnesses typically emerge, and Appelbaum said there are several signs that a troubled teen or young adult might be heading in that direction: isolating themselves from friends and peers, spending long periods alone in their rooms, plummeting grades if they're still in school and expressing disturbing thoughts or fears that others are trying to hurt them.

Appelbaum said the most agonizing calls he gets are from parents whose children are descending into severe mental illness but who deny they are sick and refuse to go for treatment.

And in the case of adults, forcing them into treatment is difficult and dependent on laws that vary by state.

All states have laws that allow some form of court-ordered treatment, typically in a hospital for people considered a danger to themselves or others. Connecticut is among a handful with no option for court-ordered treatment in a less restrictive community setting, said Kristina Ragosta, an attorney with the Treatment Advocacy Center, a national group that advocates better access to mental health treatment.

Lanza's medical records haven't been publicly disclosed and authorities haven't said if it is known what type of treatment his family may have sought for him. Lanza killed himself at the school.

Jennifer Hoff of Mission Viejo, Calif. has a 19-year-old bipolar son who has had hallucinations, delusions and violent behavior for years. When he was younger and threatened to harm himself, she'd call 911 and leave the door unlocked for paramedics, who'd take him to a hospital for inpatient mental care.

Now that he's an adult, she said he has refused medication, left home, and authorities have indicated he can't be forced into treatment unless he harms himself — or commits a violent crime and is imprisoned. Hoff thinks prison is where he's headed — he's in jail, charged in an unarmed bank robbery.

___

Online:

American Academy of Child & Adolescent Psychiatry: http://www.aacap.org

___

AP Medical Writer Lindsey Tanner can be reached at http://www.twitter.com/LindseyTanner

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Yen on defensive on U.S. fiscal worry, helps Nikkei

TOKYO (Reuters) - Uncertainty over whether U.S. lawmakers will strike a deal by an end-of-year deadline to avert a severe fiscal retrenchment undermined the yen and bolstered Japanese shares on Tuesday in low volume, with many participants away on Christmas holiday.

The dollar rose to a 20-month high of 84.965 yen early on Tuesday in Asia, as Japanese markets caught up with global investors who had reacted overnight to incoming Japanese Prime Minister Shinzo Abe's weekend comments that raised the pressure on the Bank of Japan.

During a meeting on Tuesday with officials from Japan's major business lobby, Keidanren, Abe reiterated calls on the BOJ to conduct bold monetary easing to beat deflation by setting an inflation target of 2 percent.

The head of Abe's coalition partner said on Tuesday the coalition party and Abe had agreed to set a 2 percent inflation target and compile a large stimulus budget to help the economy return to growth and overcome deflation.

The yen has come under pressure as a result of expectations that the BOJ will be compelled to adopt more drastic monetary stimulus measures next year.

The dollar was expected to stay firm this week as investors repatriate dollars, and as the U.S. fiscal impasse is likely to continue to sap investor appetite for risky assets and raise the dollar's safe-haven appeal.

"The dollar is seen relatively well bid, with all focus on the fiscal cliff," said Yuji Saito, director of foreign exchange at Credit Agricole in Tokyo.

"Negotiations may be carried over the weekend, but markets still expect a deal to be struck by December 31. It is unthinkable that the U.S. will risk driving its economic growth sharply lower by not agreeing to avoid it."

U.S. lawmakers and President Barack Obama were on Christmas holiday and talks were unlikely to resume until later in the week.

House of Representatives Speaker John Boehner failed to gain support for a tax plan at the end of last week, raising fears that the United States may face the "fiscal cliff" of some $600 billion in automatic spending cuts and tax increases set to start on January 1.

Japan's Nikkei stock average <.n225> resumed trading after a three-day weekend with a 1.1 percent gain, recapturing the key 10,000 mark it ceded on Friday after Boehner's failure sparked a broad market sell-off and the Tokyo benchmark closed down 1 percent. The Nikkei was likely to be supported as long as the yen stayed weak. <.t/>

"Ongoing optimism about the weak yen is lifting hopes that exporters' earnings will be better than expected," said Hiroichi Nishi, general manager at SMBC Nikko Securities.

Analysts say a near-term correction may be possible as the index is now in "overbought" territory after gaining 16.2 percent over the last six weeks, hitting a nine-month high last Friday. Its 14-day relative strength index was at 72.34, above the 70 level that signals an overbought condition.

MSCI's broadest index of Asia-Pacific shares outside Japan <.miapj0000pus> nudged up 0.1 percent, driven higher by surging Shanghai shares, as most Asian bourses were shut for Christmas.

The Shanghai Composite Index <.ssec> soared over 2 percent to five-month highs as investors bought property stocks on mounting optimism about the sector. Taiwan shares <.twii> jumped 1.3 percent on gains in technology and financial shares.

Asset performance in 2012: http://link.reuters.com/muc46s

2012 commodities returns: http://link.reuters.com/faz36s

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U.S. HOLDS 2013 KEY

Goro Ohwada, president and CEO at Japan-based fund of hedge funds Aino Investment Corp, said investors were likely to focus on economic fundamentals and the United States for cues on investment direction in 2013.

"There is a feeling that an investment strategy based on economic fundamentals may finally work next year, with asset prices more closely reflecting fair value. The problem is, we don't know yet which asset is a better bet than others," Ohwada said, adding that oil and gold appeared to be near their highs.

Naohiro Niimura, a partner at research and consulting firm Market Risk Advisory, said commodities and energy prices will likely move in tight ranges in 2013, with investors eyeing political events, including the U.S. fiscal cliff outlook, Italian parliamentary election set for February 24-25, and Germany's elections in September.

"The macroeconomic policies taken this year around the world to support growth are expected to result in a moderate recovery in 2013 to reduce an excessive downside risk to prices. This will likely keep commodities, gold and energy prices near their highs," Niimura said.

(Additional reporting by Ayai Tomisawa in Tokyo; Editing by Edmund Klamann and Daniel Magnowski)

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