There must be something wrong every nine in life

  Many people like to make a summary for themselves when they leave the old and welcome the new, and then make a new plan. But recently, some researchers have discovered that this phenomenon will be particularly prominent in people who are about to cross a new decade. In other words, every person aged 29, 39, 49… often makes some decisions that bring great changes in life, such as starting a marathon, or looking for an affair, or suicide.
  This report was published in the Proceedings of the National Academy of Sciences of the United States and was jointly published by researchers from New York University and the University of California, Los Angeles. “We initially analyzed a questionnaire about the meaning of life completed by 42063 adults in more than 100 countries.” One of the researchers, experimental social psychologist Hal Hechfeld of the University of California, explained. “We found that people who are about to cross the new decade are most inclined to think about the meaning of life and make some changes, such as participating in a marathon or registering on an affair dating site.”
  So, Hal and New York University Ot Adam first analyzed the data of 8 million registered male users from a well-known dating site in the United States, and found that people aged 29, 39, 49, and 59 have a higher chance of registering than people of other ages. To be 18% higher, the number of registered users at these age points is close to one million. The data of female registrants has a similar tendency, but it is not so obvious.
  Then, they began to study the suicide rate of 100,000 people registered by the US Centers for Disease Control and Prevention from 2000 to 2011, and found that among men and women between the ages of 25 and 64, suicides at the age of nine were higher than those of other ages. 2.4% out.
  A data obtained from an endurance running event website, the statistical results are also very interesting: runners aged 29 and 39 have better results than they were two years before or after this age group, and their results will be 2.3% higher about. In addition, the researcher randomly selected the data of 500 people who participated in the marathon for the first time, and found that the number of people in the age of “9” was 25% more than those of other ages.
  Why is there such a phenomenon? Is it pure coincidence, or is there some psychological or sociological factor behind it?
  Researchers think it is the latter. Researcher Otter explained, “When we invest in something, we usually work hard and move forward. When life is about to enter every new decade, we tend to stop and examine what we have done. , Is life meaningful.”
  Our culture likes to emphasize the age nodes of 30, 40, 50, 60, and even deify them as “life milestones.” As people get older, people will strengthen this obsession with so-called milestones. The statistics of the marathon show that runners at the age of 9 are obviously more likely to make a determination to participate in the race, or to enhance their training level. In fact, the physical condition of 29 or 39 years old is not much different from the previous one or two years.
  This phenomenon may also be due to people’s fascination with flat numbers (hundreds, thousands, ten thousand and other integers without fractions). A 2011 study found that among the students who took the US college entrance examination, students whose scores did not reach the average score (for example, 1899 points) were more likely to take the retake than those whose scores exceeded the average score (1801 points). Looking back at the data of the marathon, among the 9 million marathon participants, most of them finished in the flat head numbers such as 4:00 and 3:30, which means that they are consciously or unconsciously moving closer to these time points. . The flat head count makes us feel clean and tidy.
  Hal explained, “We’re not saying that people at other ages don’t make major decisions, but we want to further study why some people choose to cheat or commit suicide, while some people’s choices are healthier and more beneficial. If we can figure it out The psychological factors behind may be able to guide people to make healthier choices when facing a certain turning point in their lives, such as motivating themselves to quit smoking, start saving for retirement, or pursue a more balanced diet.” The
  study also found that the approaching new People of a certain age will be more generous in spending money. Some large consumptions are concentrated in this period, such as buying personal business insurance, investing in retirement accounts, starting to save, doing plastic surgery and so on.