A U.S. study of 534 same-sex twin pairs has found that those who had sex earlier were actually less likely to exhibit delinquent behaviour later in life. The study runs counter to most assumptions that relate early sex to later drug use, criminality, antisocial behaviour and emotional problems. By studying twins the researchers were able to eliminate the genetic and socio-economic variables that might otherwise influence the behaviour of adolescents. The study found that those people who had sex earlier developed better social relationships in early adulthood. The authors of the study plan further research to look at the type of relationships involved, how old the partners were and how long the relationships lasted.
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