In addition, research by the Crimes against Children Research Center suggests that solicitation offenders target young adolescents, typically between ages 13 and 15, which would not be consistent with the clinical diagnosis of pedophilia (because many of the adolescents involved would be showing some signs of sexual and physical maturation) (Wolak et al., 2008).

The latter group, in contrast, engages in online activities to arrange real-world meetings; their online activity is more directed toward meeting offline and shorter in duration than the online interactions of fantasy-driven offenders.

Briggs, Simon, and Simonsen (2011) identified 30 offenders who were considered to be contact driven and 21 who were deemed to be fantasy driven.

These activities appear to reflect the sexual fantasies of the offenders and likely fuel those same fantasies by providing experiences and images for future occasions.

Briggs, Simon, and Simonsen (2011) suggest that this fantasy-driven group is not interested in or likely to commit contact sexual offenses against children.

here is increasing public and professional concern about Internet-facilitated sexual offending, reflected in a greater number of prosecutions and clinical referrals for these crimes (Middleton, Mandeville-Norden, & Hayes, 2009; Motivans & Kyckelhahn, 2007; U. The large majority of online offenses involve possession or distribution of child pornography.

Internet sexual offending comprises a range of crimes, including possession or distribution of child pornography; production of child pornography; sexual solicitations (online interactions with minors for sexual purposes, including plans to meet offline); and conspiracy crimes (e.g., collaborating with others to distribute or produce child pornography or to solicit minors).

The relationship between child pornography offending and pedophilia is sufficiently robust that child pornography use has been included as specific behavioral evidence in the proposed revision of the psychiatric diagnostic criteria for pedophilia, defined clinically as "persistent sexual attraction to prepubescent children" (American Psychiatric Association, 2013; Seto, 2010).

However, pedophilia is not the sole motivation for Internet offending involving children; that is, not all child pornography offenders show a sexual preference for children over adults.

Faced with more cases than they can handle in a timely fashion, law enforcement and other professionals who deal with these offenders need to prioritize their resources. Given an overarching goal to protect children from sexual exploitation and abuse, it makes sense to prioritize and triage child pornography cases involving production or high-level distribution over possession alone or "passive" distribution (e.g., uploading images to file-sharing programs but not actively trading with others); solicitation cases involving attempts to meet in real life over online fantasy activities (e.g., sexually explicit chat); and cases involving Internet offenders who have already sexually assaulted children or are currently doing so over those with no known contact offending history.

High-priority cases, in which children are suspected to already be victims or are at imminent risk, should receive the most attention.

The offenders in Seto, Reeves, and Jung (2010) gave other explanations for their child pornography offending, including indiscriminate sexual interests, an "addiction" to pornography, and curiosity (see also Merdian et al., 2013).