Dr. Abramson was a participant in Closer to Truth:

Show 114, "Does Sex Have a Future?" 
Show 209, "Who Needs Sex Therapy?”

Dr. Paul Abramson is recognized as one of the leading authorities on human sexuality in the United States. He is a professor of psychology at the University of California at Los Angeles (UCLA) and is the foremost practitioner of forensic sexuality, which includes his work as an expert witness in large-scale, public policy litigation involving sex. He is the author of many books, including: 

With Pleasure: Thoughts on Human Sexuality
Sexual Nature, Sexual Culture

You will find more about Dr. Abramson and this topic at:
http://www.topexpertwitness.com