Science of Sex

Rutgers University | Dance & Symmetry Study

Dr. Jamie Grifo

Jill Fischer

Nigel Cameron, bioethics professor at Trinity In...

Dr. Robert Klitzman

Robert Trivers

Evolutionary biologist Robert Trivers discusses the work of a colleague, Randy Thornhill, who has just completed studies revealing that attraction is related to specific genes. Major histo-compatibility genes (MHC), for instance, fight parasites and other foreign invaders. People tend to be attracted to those who have a different MHC from their own for reproductive reasons: children with a greater variety in MHC are more disease-resistant.

Jason Weeden

Evolutionary psychologist Jason Weeden talks about why a hip to waist ratio of about 0.7 in women makes them highly attractive to men -- and also just so happens to be the ultimate ratio for high fertility in women.

Jason Weeden

Evolutionary psychologist Jason Weeden talks about why men find a woman with a low body-mass index (BMI) between 20 and 25 very attractive, and why that is also the healthiest BMI a woman can have.

Jason Weeden

Evolutionary psychologist Jason Weeden, talks about the essence of the short term relationship - long term relationship distinction.

Robert Trivers

Evolutionary biologist, Robert Trivers, talks about symmetry studies with birds, that show females are most attracted to males who have the best body symmetry.