Self-confident people have more and better sex, according to a long-term study by the Universities of Zurich and Utrecht. + Get the most important news from Switzerland in your inbox The study shows that people with higher self-esteem feel more satisfied with their sexual experiences. Conversely, satisfying sexual experiences also lead to higher self-esteem, as Elisa Weber, lead author of the study, told the Keystone-SDA news agency on Wednesday. The study, which was published in the specialist journal Personality and Social Psychology Bulletin, is based on data from over 11,000 adults in Germany who were repeatedly surveyed over a period of 12 years. According to the study, changes in a respondent's sexual satisfaction led to changes in the person's self-esteem and vice versa. This correlation between self-esteem and sexual well-being was found to be independent of relationship status. However, it was on average more pronounced in older people and women than in younger people and men.