Ann Coulter on The Doctors: Sex is the subject, also single mothers, birth control and sky rocketing teen pregnancy.

The reaction from the single mother was melodramatic with faux rage right out of the gate, but so was the reaction by the hosts who acted like she was going to pull out a gun in response to Coulters statement about a group the host belongs to.

Sex tips from Cosmo

They say that opposites attract, but any long time observer knows that while that cliche is often true, it doesn’t mean they “stick”. The anecdote is also largely to be a reference to personality differences, but new research is suggesting when it comes to physical appearance at least, women are more likely to be attracted to their masculine mirror image and not their polar opposite.

Researchers at the University of St Andrews not only found that women are more attracted to men who look like them, but that women are more trusting of men sharing similar features to themselves.

David and Victoria Beckham, Kelly Osbourne and Luke Worrellor  Johnny Depp and Vanessa Paradis? The UK Daily Mail wonders out loud: Were these celebrity couples drawn to each other because of their similar looks?

Perhaps this is the reason it didnt work out between Tom Cruise, a shorter than average brunette and Nicole Kidman, herself a tall and leggy blonde. After that relationship, Tom paired with Penelope Cruz, a girl sharing some of Kidmans features, but with the dimmer switch turned down and who even shared a homophone last name. Cruise then of course settled with the physical match Katie Holmes.

In the study, scientists used computer graphics to manipulate men’s faces before women rated their attractiveness. Faces were made to look more or less masculine, and more or less like the woman looking at the picture. The women rated the faces for attractiveness.

The results were that women like two things when rating a man hot or not: masculinity, and themselves.

While an involved mother can also help stave off a teen’s sexual activity, dads have twice the influence.

It’s something predatory men and teenage boys have known for hundreds of years; maybe forever: girls without fathers are easier to have sex with. The less prominent the fathers role in the girls life, the higher your chances of getting her to have sex with you with little coaxing or commitment. Perhaps in the past this was due much more to protectionism and the family structure of older times where father knows best and curfews were at 9 o’clock, but despite the cultural shift, the reality and reliability of the father-daughter rule remains.

Teenage boys know the rule all the more. You have a massively higher shot at getting laid by a girl raised by a whose parents are divorced, single mom, or who just hates daddy. This is frequently pointed out by male shock entertainers like Howard Stern and the now in exile Tom Leykis.

Now research by Boston College social psychologist Rebekah Levine Coley confirms it all with scientific observation in a study that surveyd 3,206 teens, ages 13 to 18, who all came from two-parent homes. The teens were asked about both their sexual behaviors and their relationships with their parents, including how much each parent knows about how they spend their time when they’re not home, and how much time they spent with each parent on activities like eating or playing games.

The impact of family time overall was especially notable. One additional family activity per week predicted a 9 percent drop in sexual activity.

Linda Carroll, an MSNBC contributor, writes in response to the study that when it comes to preventing risky teen sex, “there may be no better deterrent than a doting dad”.

Patrick Tolan, a professor of psychiatry and director of the Institute for Juvenile Research at the University of Illinois in Chicago explained, “if you’re spending time talking to them, they’re going to get your values and they’re more likely to think things through rather than acting impulsively.”