A new study finds that sending, receiving, or asking for a sext is significantly correlated with pornography use. The researchers conclude:
Not only does our research enable a deeper understanding of adolescent sexting behavior, it also extends the literature on the effects of pornography and music video viewing. … Our study [shows] that pornography use is not only associated with adolescents’ offline sexual behaviors but that it is also linked with a virtual form of sexual experimentation (i.e., sexting). (p.5)
The correlation they found may indeed indicate that viewing pornography causes sexting, as they imply in their conclusion. However, there is also another possible explanation: People who like looking at commercially produced sexual images also like looking at privately produced sexual images.