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Familial and Public Attitudes Might Be Less Important for Our Sexual Behaviour

by Hannah Punitha on  June 19, 2008 at 5:39 PM Sexual Health News   - G J E 4
 Familial and Public Attitudes Might Be Less Important for Our Sexual Behaviour
When it comes to making choice of a sexual partner, attitudes of families and the public have little impact on an adult.
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Instead, the individual's unique experiences and hereditary factors are the biggest driving force in making him or her decide whether they will have sex with same-sex partner or the opposite sex, says a unique new study.

The study by the Swedish medical university Karolinska Institute (KI) is the largest in the world so far and was performed in collaboration with the Queen Mary University of London.

More than 7,600 Swedish twins (men and women) aged 20-47 years responded to a 2005 - 2006 survey of health, behaviour, and sexuality. Seven percent of the twins had ever had a same-sex sexual partner.

"The results show, that familial and public attitudes might be less important for our sexual behaviour than previously suggested", says Associate Professor Niklas Langstrom, one of the involved researchers.

"Instead, genetic factors and the individual's unique biological and social environments play the biggest role. Studies like this are needed to improve our basic understanding of sexuality and to inform the public debate," Langstrom added.

The conclusions apply equally well to why people only have sex with persons of the opposite sex as to why we have sex with same-sex partners. However, the conclusions are more difficult to transfer to countries where non-heterosexual behaviour remains prohibited.

Overall, the environment shared by twins (including familial and societal attitudes) explained 0-17 percent of the choice of sexual partner, genetic factors 18-39 percent and the unique environment 61-66 percent.

The individual's unique environment includes, for example, circumstances during pregnancy and childbirth, physical and psychological trauma (e.g., accidents, violence, and disease), peer groups, and sexual experiences.

The study "Genetic and Environmental Effects on Same-sex Sexual Behaviour: A Population Study of Twins in Sweden" is published in Archives of Sexual Behaviour.



Source: ANI
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