Jenna Ladd | November 28, 2017
A recently published study in the journal Nature Human Behavior found that humans’ personalities are shaped by the temperatures where they live. Existing research confirms that human personality varies geographically, but it is unclear why exactly that is. The study’s leading author Lei Wang, a social and cultural psychologist at Peking University in Beijing, posits that temperature could play a big role because the conditions outside influence people’s habits.
Lei Wang and his team of researchers conducted two separate studies, one in China and one in the U.S., comparing the personality characteristics of people that live in areas with mild climates and those that live in regions with harsh climates. The study examined data from 5,500 people from 59 Chinese cities and from about 1.66 million people from about 12,500 ZIP codes in the United States, using data from personality assessments and average temperatures of regions where they grew up.
Regardless of gender, age, sex, or income, people from regions with temperatures that were mild were more agreeable, conscientious, emotionally stable, extroverted and open to new experiences. These findings were true in both countries. However, people living in harsher weather regions in the U.S. and China had generally different personality types. Those that resided in harsher weather zones such as Heilongjiang, Xinjiang and Shandong had more collectivist personality traits than their fellow Chinese from more temperate climates. In the U.S., people who live in harsher climates like Montana and Minnesota generally have more individualistic personality traits than those that live in more mild climates.
The study’s authors call for more research on the topic but also point out, “as climate change continues across the world, we may also observe [associated] changes in human personality. Of course, questions about the size and extent of these changes await future investigation.”