Pedophilia studied only in men since it is absent or extremely rare in women. Proportions of gynephilia vs androphilia taken from Kinsey reassessment by Gebhard and other major studies. Heterosexual vs homosexual child offenders counted from Mohr, Gebhard, and 457 cases at Clarke Institute. Proportion of offenders against boys far exceeds population androphilia rate while offenders against girls matches gynephilia rate. Partner age and sex preferences develop dependently not independently. Hetero/homo orientation in pedophiles arises from different factors than in general population.