According to the study, our happiness levels follow a U-shaped curve
; the probability of depression bottoms out at about 44 and, by the time you are 70, you should feel as happy as a 20-year-old again.
A study by Northumbria University academics has found that although computer users are increasingly willing to disclose sensitive personal information online, there is a U-shaped curve
whereby the youngest and oldest members of society are less protective of their privacy than those who are middle-aged.
This relationship can be shown by an inverted U-shaped curve
(see Figure 1).
In the context of an intra-household human capital allocation model, this generates an inverted U-shaped curve
where gender inequality increases as f falls.
The mortality and BMI data showed a strong U-shaped curve
, with the lowest mortality in the BMI range of 25 to less than 35.
Moreover, Table 5 shows that standard deviation takes an inverse U-Shaped curve
. It is much higher during the crises than before and after the crises, actually the standard deviation of DJIA during the crises is 2.5 folds DJIA before, the standard deviation of S&P during the crises is 3 folds of S&P before, and finally the standard deviation of NASDAQ during the crises is 2.6 folds than that of NASDAQ before.
You might wonder if the U-shaped curve
is something peculiar to selenium and cancer.
The latest data include nearly 2 million births and show a shallow U-shaped curve
relating NCAs to maternal age.
Terry put on the screen was one showing a U-shaped curve
on moderate alcohol consumption and overall mortality.
But, as is the case for all voters, McCain's relative advantage is greatest among college graduates, and the data to a degree reflect the same U-shaped curve
evident among all voters.
Orsolya Lelkes, economic policy analyst at the European Centre for Social Welfare Policy and Research in Vienna, says that life satisfaction progresses along a U-shaped curve
as one ages, starting out very high at the onset of adulthood, ages 16-29, moving steadily downward throughout ages 30-39, and bottoming out between 40 and 49 before rising again though the 50s and 60s.
They found people followed a U-shaped curve
of psychological well-being reaching the lowest point during their 40s.