Peer Pressure to have sex: All in the mind?

A Sydney Morning Herald article on the 21st May questions the reality of teenagers assumptions of what their "peers" are doing sexually.
http://www.smh.com.au/lifestyle/lifematters/sex-peer-pressure-selfimposed-20090521-bg9q.html

• Almost 70 per cent of young people who took part in a Melbourne-based study believed they'd had fewer sexual partners than their "average" peers.

The author of the study says:
.."it was important that young Australians be told it was okay to hold off starting to have sex, or to go without for a time, and that it was "not always the case" their peers had multiple sexual partners."

The article that details this study is in: Sexual Health Volume 6 Number 2 2009