Michael C. Seto

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Michael C. Seto
Born1967 (age 56–57)
EducationB.Sc. (1989), M.A. (1992), Ph.D. (1997)
Alma materQueen's University
Occupation(s)Clinical and forensic psychologist
EmployerRoyal Ottawa Health Care Group
Known forResearch on pedophilia and sex offenders
Notable workInternet Sex Offenders (APA books, 2013)
Pedophilia and Sexual Offending Against Children (APA books, 2008)
"Is pedophilia a sexual orientation?" (Arch Sex Behav, 2012)

Michael Chikong Seto (/ˈsɛt/; born 1967) is a Canadian forensic psychologist, sexologist, and author. He is director of Forensic Rehabilitation Research at the Royal Ottawa Health Care Group, where his research focuses on pedophilia, sexual offenses committed against children, child pornography, risk assessment, offenders with mental disorders, psychopathy, and program evaluation.[1]

He is editor in chief of Sexual Abuse: A Journal of Research and Treatment, the official journal of the Association for the Treatment of Sexual Abusers, and an associate editor of the Archives of Sexual Behavior, the official journal of the International Academy of Sex Research. He also serves on the editorial board for the journal Law and Human Behavior, the official journal of the American Psychology-Law Society, as well as the Journal of Sex Research.[2] He is an associate professor at the University of Toronto and holds cross-appointments to Toronto Metropolitan University, Carleton University, and the University of Ottawa.


Seto received a B.Sc. (1989) in biopsychology from University of British Columbia, completed his M.A. (1992) and Ph.D. (1997) in clinical psychology at Queen's University, Kingston, Ontario, Canada. He worked at the Centre for Addiction and Mental Health (and its predecessor, the Clarke Institute of Psychiatry) from 1994 to 2008, before moving to the Royal Ottawa Health Care Group in 2008, first as a consultant and then as the director of Forensic Rehabilitation Research.[3]

He serves as Scientific Advisor to Thorn,[4] a company that partners across the tech industry, government and NGOs and leverage technology to combat predatory behavior, rescue victims, and protect vulnerable children. Thorn is co-Founded by Ashton Kutcher and Demi Moore.


Seto has been noted as "one of the foremost authorities" on adolescent sex offenders.[5][better source needed]

Seto defined the term mesophilia, a chronophilia involving attraction to middle-aged adults in their 40s and 50s, in a 2017 literature review.[6]


In describing pedophiles, Seto emphasizes that there are few outward signs. He told USA Today, "People would feel better if there was a profile, but there really isn't." "It can be a priest, a coach, or a teacher. It could be a person who is a trusted member of the community. They are employed. They have friends. It doesn't fit with the idea that this person is different in some way that we could notice and protect ourselves." Serial child molesters seek out vulnerable children and cultivate relationships with them, Seto said. "They are not picking children at random." Rather, "They are seeking out children who will be more receptive to their approach—children who may be socially isolated, impoverished, lacking a father figure."[7]

Seto described child pornography offenders as often being socially isolated, spending long stretches of time online, and being secretive about their online activities. "Several studies have suggested that child pornography offenders become increasingly involved online, sometimes spending hours every day searching for more content, as well as spending time on related sites" like youth-oriented forums or chat rooms, he said.[8] There also appears to be an age difference, according to Seto: "People on average under 35 are more familiar with the technology than those who are over 35, and the arrests reflect that."[9]

In 2007, Seto's research team received a $66,000 (Canadian) research grant to study child pornography offenders, comparing those who do with those who do not go on to commit future offences. Ontario politician George Smitherman criticized the study and the Ontario Mental Health Foundation for funding the project, because the study subjects would receive money for agreeing to participate ($60 Canadian).[10] Seto responded that he was unsurprised the study has generated controversy. He said "I do understand why people are concerned about this, but I hope they don't lose sight of the fact that we're doing this research to understand pedophilia and sexual offending," and that it is standard practice to pay people to take part in clinical studies.[11] According to OMHF, "The new knowledge to be gained from the proposed study would contribute to our theoretical understanding of the origins of sexual offending against children, because it would help identify factors that influence the likelihood that someone with a sexual attraction to children will act upon that attraction."[11]


  1. ^ "Michael Seto". utoronto.ca.
  2. ^ "The Journal of Sex Research: Editorial board". Taylor & Francis Online. Retrieved 23 February 2015.
  3. ^ "Perverted Justice". Reason.com. 2011-06-14.
  4. ^ "Defending Children from Sexual Abuse | About Thorn".
  5. ^ "Sex crimes by juvenile offenders are on the rise in Harris County". Houston Chronicle. 2012-04-21.
  6. ^ Seto MC (January 2017). "The Puzzle of Male Chronophilias". Arch Sex Behav. 46 (1): 3–22. doi:10.1007/s10508-016-0799-y. PMID 27549306.
  7. ^ "Misconceptions make pedophiles hard to detect – USATODAY.com". USATODAY.COM.
  8. ^ "Expert provides snapshot of a child pornographer". Metro.
  9. ^ "Ontario police arrest 31 in massive child-porn bust". nationalpost.com. 2010-03-30.
  10. ^ "Ont. won't fund pedophile study - CTV News". CTVNews. 4 May 2007.
  11. ^ a b "Group objects to study that will pay sex offenders". cbc.ca. 4 May 2007.