These changes in personality were related to changes in people’s social networks as a result of travel. As you might expect, those people who did not travel maintained a similar social network over the study period. In contrast, those people who traveled tended to meet a lot of new people from the host country of their travel and to lose touch with people from their home country. These changes in social network were particularly strongly related to the observed changes in Openness to Experience and Emotional Stability.