急要一篇关于“人生的变化”约120字的英语文章

People's personalities are not set in stone by the age of 30, contrary to popular and professional beliefs, new research suggests.

In fact, the old adage about people becoming wiser with age may hold some truth, according to the US study, which examined five major personality traits.

Sanjay Srivastava and colleagues surveyed over 130,000 people on key personality traits known as the "Big Five": conscientiousness, agreeableness, neuroticism, openness and extraversion. These traits are not dependent on factors like mood, says Srivastava, now a psychologist at Stanford University, California.

Many psychologists believe these five key characteristics are fundamentally genetic and do not change or change only slowly after 30. But the research suggests that not only do people continue to change after this milestone, but in some ways they change more.

"We found a mixture of different patterns of how people change," Srivas