We also tested whether entitlement and efficacy differed by gender, and hypothesized that entitlement and efficacy would be higher in older participants and those with more sexual experience.
Finally, on a selfish note, I wrote an extensive review piece on this topic (Harden, 2014, "A Sex-Positive Framework for Reseach on Adolescent Sexuality" in Perspectives on Psychological Science), and I would, of course, be happy if the authors included a reference to my paper in their Introduction or Discussion.