The commercial sexual exploitation of children, which is sometimes referred to as child sex trafficking, occurs when an individual under the age of 18 exchanges sex or sexual acts for goods, services, drugs, or money. Multiple projects and PIVOT seek to understand compounded risk for this form of victimization, as well as fostering resiliency and building prevention.
Project NEXUS
This online survey of youth ages 13-24 in the United States examined patterns and predictors of desired help, help sought, comfort in data collection processes, and identification protocols.
Personnel: Jennifer O’Brien, Kimberly Mitchell, Deirdre Colburn, Lisa Jones
Project Impact
Researchers from the University of Texas at Arlington, The University of New Hampshire, and the University of Minnesota received funding from the U.S. Centers for Disease Control (CDC) to evaluate the Not a Number trafficking prevention program. The goal of the study is to evaluate the effectiveness of this program in preventing commercial sexual exploitation among children and youth.
Personnel: Jennifer O’Brien, Lisa Jones, Lauren Martin
Website: https://projectimpact-evaluation.org/
Publications
- Jones, L.M., O’Brien, J.E., & Graham, S. (2025). Building the evidence on preventing youth commercial sexual exploitation: A non-randomized, quasi-experimental evaluation of the Not a Number trafficking prevention program. Journal of Interpersonal Violence. 1-29. https://doi.org/10.1177/08862605251336355
- Jones, L.M., O’Brien, J.E., Colburn, D., McKinney, K., & Martin, L. (2024). Youth perspectives on commercial sexual exploitation: Results from pre- and post- program surveys administered by the Not a Number trafficking prevention curriculum. Research in Human Development. 20 (2-3). 1-20. https://doi.org/10.1080/15427609.2024.2412427
- O’Brien, J.E., McKinney, K., Martin, L., & Jones, L.M. (2024). Help-seeking among children impacted by commercial sexual exploitation: A scoping review. Trauma, Violence, & Abuse. 1-22. https://doi.org/10.1177/1524838024125.
Understanding the physical and psychological health and wellness needs of minor sex trafficking victims
Personnel: Jennifer O’Brien, Amy Farrell, Carlos Cuevas, Lisa Jones, Rebecca Pfeffer
Report: https://nu-sccj.github.io/mst-report/assets/Understanding%20Physical%20and%20Psychological%20Health%20MST_Technical%20Report.pdf
Publications
- Pfeffer, R., Houston-Kolnik, J., Farrell, A., O’Brien, J.E., Wagner, A., Bacy, S., Lincoln, A. (2025). Perceptions of trauma-informed care: The experiences of minor sex trafficking survivors in medical settings. BMC Emergency Medicine. https://doi.org/10.21203/rs.3.rs-8098953/v1
- Wagner, A., Lockwood, S., Farrell, A., Cuevas, C., O’Brien, J.E., Pfeffer, R., Kolnik, J., & Lincoln, A. (2024). Understanding the Retrospective and Current Health Care Needs and Service Experiences of Adult Survivors of Minor Sex Trafficking. Research in Human Development. 20 (2-3). 135-158. https://doi.org/10.1080/15427609.2024.2407257
Law Enforcement’s Response to Child Sex Trafficking
This completed study used a combination of mail surveys and in-depth telephone interviews with agencies and law enforcement investigators to better understand the police response to CST. Focusing on the year 2021, we collected information from agencies by mail on how many cases of CST they investigated. We then followed up with key investigating officers from the agencies who reported cases in 2021 to ask them more details about the cases. Details of interest included victim and offender characteristics, types of cases (e.g. trafficking involving a controlling person, survival sex, or exchange of child sexual abuse material for monetary gain), other agency involvement, community resources deployed, and case outcomes (charges and arrests).
Personnel: Jennifer O’Brien, Kimberly Mitchell, Lisa Jones, David Finkelhor
Report: https://www.unh.edu/ccrc/sites/default/files/media/2025-10/Final%20LEA-CST%20Report%20%28FOR%20RELEASE%29.pdf
Publications
- Mitchell, K.J., O’Brien, J.E., Puchlopek-Adams, A., & Jones, L.M. (2025). Law enforcement agency practices and policies for the investigation of 2024 sex trafficking: Are agencies using victim-centered approaches? American Journal of Criminal Justice. 1-19. https://doi.org/10.1007/s12103-024-09776-6
- Mitchell, K.J., Jones, L.M., O’Brien, J.E., & Puchlopek-Adams, A. (2025). A typology of commercial sexual exploitation of children cases coming to law enforcement attention in 2021: Implications for identification and investigations. Child Abuse & Neglect. 169 (1). 1-13. https://doi.org/10.1016/j.chiabu.2025.107619
- O'Brien, J.E., Jones, L.M., Mitchell, K.M., Zwerling Kahn, G. (2025). COVID-19 and child sex trafficking: Qualitative insights on the impact of the pandemic on victimization and service provision. Public Health Reports. 1-9 https://doi.org/10.1177/00333549241267721
- O’Brien, J.E., Kahn, G.Z., Gast, L., & Mitchell, K.J. (2025). “They are not victimless crimes…that’s frustrating to hear”: Qualitative insights from prosecutors working on cases related to technology facilitated child sexual abuse material. Child Abuse & Neglect. 159. 1-14. https://doi.org/10.1016/j.chiabu.2024.107169
- O’Brien, J.E., Mitchell, K.J., Jones, L., & Chinwokwu-Njemanze, C. (2025). The importance of fostering trust in service delivery with child and youth survivors of commercial sexual exploitation. Journal of Forensic Nursing. 1-12. https://doi.org/10.1097/JFN.0000000000000533
- Rizo, C., O’Brien, J.E., Preble, K., & Mitchell, K. (2025). Human Trafficking Services for Youth with Minoritized Identities: Application of an Access to Care Framework. Child and Youth Services Review. 172. 1-10. https://doi.org/10.1016/j.childyouth.2025.108263
- Prior, A., O’Brien, J.E., Cattarin, E., Murphy, M., Kahn, G., & Mitchell, K.J. (2025). “There’s absolutely no borders. There’s no limitations.”: Law enforcement insights on technology’s role in the trajectories of commercial sexual exploitation of children crimes. Journal of Children and Media. Online First. https://doi.org/10.1080/17482798.2025.2556205
- O’Brien, J.E., Prior, A., & Mitchell, K.J. (2025). “These victims are some of the most difficult you're going to work with”: Challenges in police work with commercially sexually exploited children. Criminal Justice and Behavior. Online First. https://doi.org/10.1177/00938548251372066
- Prior, A., O’Brien, J.E., Puchlopek-Adams, A., Finkelhor, D., & Mitchell, K.J. (2025). “They had to change the model to fit the victim, versus the victim having to fit the model”: Innovative solutions in community response to CSEC crimes. Child and Youth Services Review. https://doi.org/10.1016/j.childyouth.2025.108682