In a pair of related studies released by Seattle Children's Research Institute and published in the January 2009 issue of Archives of Pediatric & Adolescent Medicine, researchers found that 54 percent of adolescents frequently discuss high-risk activities including sexual behavior, substance abuse or violence using MySpace, the popular social networking Web site (SNS).

A University of Georgia program designed to reduce alcohol use, drug use and risky sexual behavior in African-American youth also reduces the likelihood of engaging in conduct problems by up to 74 percent two years later, according to a new study.

Oregon and Hawaiian researchers have found that a woman's weight does not seem to affect sexual behavior. In fact, overweight women are more likely to report having sex with men than women considered to be of "normal weight."

Spanking, as a corporal punishment in general, is a heartily debated social issue in many countries. Questions exist as to whether children should be spanked, whether it is an effective method of discipline, and whether or at what point it constitutes child abuse.

A sense of personal control over sexual behaviors strongly influences Latina women’s decisions of when to first engage in sex, report researchers from the University of Chicago Medical Center in the November issue of the Journal of Adolescent Health.

A team of researchers at Penn Sate has used an animal model to reveal, for the first time, a physiological basis for the effect of alcohol on male sexual behavior, including increased sexual arousal and decreased sexual inhibition. The research, which will be published on 2 January 2008 in the scientific journal PLoS ONE, resulted in four novel findings with broad importance for further addiction research.

Differences in sexual behaviours do not fully explain why the US HIV epidemic affects gay men so much more than straight men and women, claims research published ahead of print in the journal Sexually Transmitted Infections.

Female beetles mate to quench their thirst according to new research by a University of Exeter biologist. The males of some insect species, including certain types of beetles, moths and crickets, produce unusually large ejaculates, which in some cases can account for around 10% of their body weight.

For years, scientists have searched in vain for slivers of the brain that might drive the dramatic differences between male and female behavior. Now biologists at Harvard University say these efforts may have fallen flat because such differences may not arise in the brain at all.

By short-circuiting the sensory organ that detects the chemical cues mice use to attract mates, a team of Howard Hughes Medical Institute (HHMI) researchers has prompted female mice to behave like male mice in the throes of courtship.

The eggs of the penduline tit Remiz pendulinus are frequently abandoned as both parents go in search of new sexual conquests, a study published in the Journal of Evolutionary Biology has found.

There are many effective, albeit expensive, intervention programs aimed at encouraging HIV-positive people to practice less risky behavior. But a new UCLA AIDS Institute study has found that self-monitoring by these patients is not only an effective strategy but is inexpensive and easy to implement as well.