And it was not until 1954 that the stock market regained its pre-Depression levels.
Car sales have been running at depression levels, and pent-up demand is about to burst, he says.
Mothers' stress or depression levels were roughly the same, as were the parent-child bonds in both groups.
The unemployment rate for young people is 20%, near Great Depression levels.
Quitting the euro would not be pain-free -- but it might well become a less painful alternative to what those countries are suffering now: Great Depression levels of unemployment, rising taxes, massive social security cutbacks.
The participants meditating also showed improved mental and cognitive functioning and lower levels of depression compared with the control group.
They found 71% reported decreased levels of depression after a country walk compared with 45% after a shopping centre walk.
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Harsh families made up the smallest group and their kids had the worst academic performance and the highest levels of depression.
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Research has also linked low BDNF levels to depression and dementia.
In a study of 26 stockbrokers he conducted a decade ago, Mr. Cass found nearly one-quarter had clinical levels of depression, more than three times the rate among the general population.
Depressive symptoms stand out as particularly strong predictors of youth violence and aggression, and therefore current levels of depression may be a key variable of interest in the prevention of serious aggression in youth.
Omega-3s are found in oily fish such as salmon, as well as in walnuts and kiwi fruit, and there is a strong negative correlation between the extent to which a country consumes fish and its levels of clinical depression.
Corporate-bond spreads are sufficient to compensate for the kind of default levels seen in the Depression.
Of course, if we had spiraled into a depression, our deficits and debt levels would be much worse.
The benefits found in the study could not be attributed to differing levels of education, incidence of depression or overall health among the subjects, Almeida says.
Commentators pointed out that America's gross domestic product actually grew by 2% during the last quarter of 2008 and that the current recession's 8% unemployment level is far below that of the Depression and even a few points below unemployment levels during the last major recession, in 1982.
These receptors interact with the neurotransmitter glutamate, the levels of which seem to be out of balance in depression.
Another catastrophic decision President Hoover made was to raise taxes sharply when we were in the pit of the Depression, which promptly sent an already shattered economy spiraling to even deeper levels.
Not even a worldwide depression that permanently lowers global economic output and emissions to, say, 1970 levels, would stop CO2 concentrations from rising over the remainder of the century.
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Spain has jobless levels akin to what the U.S. saw during the Great Depression, but Madrid says it can afford the Games.
But, says Prof Williams, despite the huge levels of investment, it is just not possible to refer everyone with depression to mental health services.
Moreover, she adds, the richest countries in the world also tend to have the greatest levels of income inequality, which has been linked to higher rates of depression as well as many other chronic diseases.
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The Temple study, presented at the Gerontological Society of America's annual meeting, found 25% of their subjects had "clinically relevant" levels of symptoms, yet only 8% reported having a current diagnosis of depression.
Too-high stress hormone levels are directly linked to gastrointestinal problems, lowered immune response, anxiety disorders and depression.
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The recent depression in the stock price has been the single largest factor in making these multiples move to such attractive levels.
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