In the most recent survey, for example, 71 percent of girls of middle school or high school age said they were satisfied with life as a whole.

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Tumblr users range in all age groups and students in high school and even middle school can begin putting together their online resume with ease, thanks to all of the tools available to use with a professionally designed background to pick to accompany the work.

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In addition to looking at personal characteristics such as age and relationship status, the researchers divided the countries into high- and middle-to-low income groups according to average household earnings.

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Mid-nineteenth-century Americans endured a high rate of infant mortality but expected that most individuals who reached young adulthood would survive at least into middle age.

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After controlling for other factors which might influence heart disease risk, they found that high levels of distress at age seven were associated with a 31% increased risk of cardiovascular disease in middle-aged women.

BBC: Unhappy childhood linked to heart risk in later life

Back in its golden age in the 1950s and 1960s, it offered middle-class people, not just techy high-fliers, a shot at the American dream complete with superb schools and universities, and an enviable physical infrastructure.

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