Thirteen is the sexiest age? I just read Derbyshire's claim that, based on TangoMan's analysis of rape statistics, the peak age for female sexual attractiveness is 12-14. It seems to me that this age range is distorted downward by the fact that children will be overrepresented in rape statistics because when children have any sexual experiences with an adult, it is by definition rape. Adult-adult sex can be consensual--by legal and conventional definition, adult-child sex cannot. The average age of rape is also low because one important contributing factor is vulnerability, and because some rapes may be motivated by factors other than sexual attraction--other factors associated with childhood, such as immaturity.
Does anyone have other kinds of evidence relevant to this issue? One idea I had was to google the terms "barely 18" and "college girls" to get an idea if attraction would be tilted younger or older. The numbers were 479,000 and 3.3 million, respectively.