A new study says that people from higher social classes have fewer friends outside of their own country.
The study analyzed 57 billion friendships on Facebook.
Researchers found people from those groups had lower levels of internationalism and made more friends domestically than abroad when it comes to friendship networks.
The results are in line with the hypothesis that high-social class individuals have greater resources, and therefore tend to be less socially engaged, particularly with those from groups other than their own.
However, the researchers said the fact that those of lower social status tend to have more international connections demonstrates how low-social class people "may actually stand to benefit most from a highly international and globalized social world".
"The findings point to the possibility that the wealthy stay more in their own social bubble, but this is unlikely to be ultimately beneficial," said co-author Aleksandr Spectre, from the University of Cambridge's Department of Psychology.
"If you are not engaging internationally then you will miss out on that international resource - that flow of new ideas and information," said Spectre.