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Welcome to our next IATSO Conference in Poznan, Poland! 

August 26th to September 28th, 2025

Parallel Sessions

We are happy to announce that these parallel sessions will be presented at our conference in Trondheim, Norway:

 

Technology-assisted harmful sexual behaviour among children and adolescents – Understanding and intervening

Jennifer Allotey

 

Do the sexual fantasies of minor-attracted people differ depending on the target?

Ross M. Bartels

 

An overview of the development and therapeutic approach of Stand Strong, Walk Tall and Det Finnes Hjelp 

Sarah Beggs Christofferson, & Christine Friestad

 

The Danish Sexual Offender Treatment and Research Program (DASOP): Possible effects on criminal reoffending?

Susanne Bengtson, Ellids Kristensen, Michael Ibsen, & Niklas Långström

 

Protective and desistance factors among individuals who have committed a sexual offense (ICSO): Need for a clarified articulation

Caroline Benouamer, Emilie Telle, Luca A. Tiberi, Romanie Andris, Louise Desclin, & Thierry H. Pham

 

Links between aggression-related sexual fantasies, sexual harassment and the use of coercive strategies in men and women

Joseph B. Birke, & Rebecca Bondü

 

A dialogical tool for prevention of harmful sexual behavior among adolescents

Ulla Bjørndahl, & Rona Eriksen Andersgaard

 

Play it Right part 2: A dialogical tool for prevention of harmful sexual behavior among adolescents with intellectual disabilities

Ulla Bjørndahl, & Rona Eriksen Andersgaard

 

Prison climate and rehabilitation of men with sexual convictions: The relationship between relationships, readiness and compassion

Nicholas Blagden

 

The Corbett Centre: A case study for reintegration of people with sexual convictions

Nicholas Blagden, & Eve Penford

 

Adverse childhood experiences, trauma-informed principles and sexual violence risk assessment: Are we where we need to be? 

Laura Bowden, & Emily Glorney

 

Developing and delivering a trauma-informed, compassion-focused therapy programme for individuals with histories of complex trauma, mental health, neurodiversity and sexually harmful behaviours

Laura Bowden, Catherine Jones, Sarah Lund, & Ellen Poynter

 

The running clinical trials PRIORITY, GPP and BRIDGE

Maria Breide, Allison K. McMahan, Malin Joleby, Johan Holmberg, Tobias Lundgren, Katerina Klapilova, Jozef Metenko, Nina Vaaranen-Valkonen, Rafael Ballester-Arnal, Gerhard Andersson, Peer Briken, Christoffer Rahm, & PRIORITY consortium

 

Practical and ethical considerations of research with incarcerated women: Learnings from a bi-regional study of online sexual abuse and exploitation of children (OSAEC) offenders in the Philippines

Margaret Brennan, Elaine Byrnes, Nicole Munns, Gabriel Katz-Wisel, Melvin Jabar, Zaldy Collado, & Maria Caridad Tarroja

 

Responding to online sexual abuse and exploitation of children (OSAEC) in the Philippines: Towards an understanding of offence presentation, risk and management considerations

Margaret Brennan, Elaine Byrnes, Kieran McCartan, Nicole Munns, Gabriel Katz-Wisel, Melvin Jabar, Zaldy Collado, & Maria Caridad Tarroja

 

Live distance child abuse from a police perspective

Sigrid Buseth

 

Development of a rating scale for offending dynamics of men convicted for sexual offenses

Annastasia Camardella, Laura Biedermann, Martin Rettenberger, & Daniel Turner

 

The relevance of the self-regulation model for the explanation of sexual violence

Annastasia Camardella, Laura Biedermann, Martin Rettenberger, & Daniel Turner

 

Preventing future harm: Case studies of juveniles in preventive sex offender treatment

Fabiola Casademont, Viktoria Märker, & Peer Briken

 

Mental health needs and barriers to treatment of people with a sexual interest in children: A systematic review

Agatha Chronos, Sara Jahnke, & Nicholas Blagden

 

A compassionate approach to prevention: The Aurora Project

Jordan Clayton

 

Individuals’ interpretation of scenarios included in the rape proclivity measure

Laleh Dadgardoust, & Leigh Harkins

 

Empathy for pain: A group comparison of autonomic empathic responding in sexual offenders against children

Natasha Daly, & Steven M. Gillespie

 

The embodied self: Exploring therapeutic interventions through a trauma lens with men who sexually offend

Maxine Daniels, & Amy Meeson

 

Mapping incel language: A longitudinal linguistic analysis of online incel speech

Melissa S. de Roos, & Christiana Nika

 

Over- and undertreatment in sex offender therapy: Evaluation of the degree of treatment in a specialist outpatient setting 

Markus Dietl, & Markus Feil

 

Developing a core outcome set for the evaluation of psychoeducational programmes for individuals engaging in online child sexual abuse, technology-assisted harmful sexual behaviours, and their families: A Theory of Change approach

Erifili Efthymiadou

 

Establishing expert consensus on essential components and evaluation of programmes for the prevention of child sexual abuse material (CSAM) offences: An international e-Delphi study

Erifili Efthymiadou, & Sarah Wefers

 

Exploring essential components of programmes for the prevention of child sexual abuse material (CSAM) offences: Focus-groups and interviews with individuals who have committed CSAM offences

Erifili Efthymiadou, & Sarah Wefers

 

The use of online-based self-report instruments in sexual risk assessment (@MyTabu)

Sonja Etzler, Katharina Nitsche, Ann-Sophie Tröger, & Martin Rettenberger

 

Health service utilization among persons convicted of sexual crimes: Results from a national cohort of prison inmates

Christine Friestad, Anne Bukten, Ingeborg Skjærvø, Anja Vaskinn, & Marianne Riksheim Stavseth

 

Latent profiles of people convicted of sexual offences in the U.K.

Steven M. Gillespie, & Ian A. Elliott

 

Etiological aspects of hypersexuality in men convicted of a sexual offense 

Priscilla Gregório Hertz, Martin Rettenberger, Daniel Turner, Wolfgang Retz, & Reinhard Eher

 

Emotions are the clue, not the problem

Ellen Gunst

 

Psychological characteristics and offense risk among men who own sex dolls

Craig A. Harper, & Rebecca Lievesley

 

Social attitudes to sex doll ownership

Craig A. Harper, & Rebecca Lievesley

 

Release and relapse: Understanding sexual recidivism in a sample of US Men

Danielle Arlanda Harris

 

Understanding wellbeing and desistance in men who received treatment for sexual offending during adolescence

Danielle Arlanda Harris

 

A Delphi study on barriers to CSA prevention and intervention programs in the European Union 

Lina Sophie Haubrock, Jana Hillert, Peer Briken, & Arne Dekker

 

Talking for Change: The evaluation of Canada’s first anonymous child sexual abuse perpetration prevention helpline

Ainslie Heasman, Skye Stephens, Ian V. McPhail, Cory Gerritsen, & Sarah Moss

 

ACUTE-2007 and STABLE-2007 predict recidivism for men adjudicated for child sexual exploitation material offending

Maaike Helmus, & Kelly Babchishin

 

Web-based treatment for individuals who sexually offend: A systematic review on efficacy and issues

Jana Hillert, Lina Sophie Haubrock, Arne Dekker, & Peer Briken

 

Narrating agency in investigative interviews of online sexual abusers

Anne Iversen, Lisbet Frang Christiansen, & Eva Langvik

 

Complex associations between stigma experiences and willingness to seek therapy among pedohebephilic people

Sara Jahnke, Ian V. McPhail, & Jan Antfolk

 

Secret-keeping in therapy by clients who are sexually attracted to children

Sara Jahnke, Nicholas Blagden, Ian V. McPhail, & Jan Antfolk

 

Supporting context figures of (potential) sex offenders: Stop it Now! the Netherlands (NL)

Ellen Janssen

 

From Prevent It to Prevent It 2.0: Manual revisions

Malin Joleby, Allison K. McMahan, Christoffer Rahm, Gerhard Andersson, & PRIORITY consortium

 

Secondary trauma in forensic professionals working with perpetrators of sexual violence

Marije Keulen-de Vos, & Funda Sanci

 

The court of public opinion: Public perceptions towards perpetrators of sexual violence 

Marije Keulen-de Vos, Vera Kuipers, & Kate Wray

 

Inpatient treatment program for sex offenders in Bohnice Psychiatric Hospital, Prague

Jan Koznar, & Petr Weiss

 

Hypersexual and paraphilic behavior disorders in ICD-11 & DSM-5-TR

Richard Krueger, & Meg Kaplan

 

The power of disclosing sibling sexual abuse

Abbie Lake

 

Sexual abuse. Pedophilia, psychiatry, and legal certainty 

Thore Langfeldt

 

Lay perception of the internet child abusers

Eva Langvik, Lisbet Frang Christiansen, & Anne Iversen

 

Applying the RNR principles to novel correctional programs for people who sexually offended 

Johanna Lätth, Jonas Lennestål, Louise Starfelt Sutton, Niklas Långström, & Christoffer Rahm

 

Preventing child sexual abuse material use: Prevent It RCT results 

Johanna Lätth, Niklas Långström, & Christoffer Rahm

 

Online child pornography offenders in France: Presentation of a multidisciplinary research program

Cédric Le Bodic, & Barbara Smaniotto

 

Professional experiences of working with people who are attracted to children

Rebecca Lievesley, & Craig A. Harper

 

Understanding the lived experiences of men who own sex dolls

Rebecca Lievesley, & Craig A. Harper

 

Looping disruption: A relational mechanism enhancing treatment readiness among individuals convicted of sexual offending

Stina Lindegren

 

Participants’ experiences of sex offender treatment: Searching for desisting narrative identities

Stina Lindegren

 

The Therapist Rating Scale-Revised (TRS-2): Pre- and post-therapy underlying structure and correlates in two independent samples

Stina Lindegren, & Liam E. Marshall

 

How to make a sexual offender? Consequences of the genetics research on pedophilia

Anders Lindskog

 

Voyeurism: What is it and what do we know so far?

Victoria P. M. Lister, & Theresa A. Gannon

 

One size does not fit all: The combination reaction of stalking and sexual violence, in the assessment of risk

Nicholas Longpré, Maria Tachmetzidi-Papoutsi, & Ewa Stefanska

 

Rape Myth Acceptance scale: An Item Response Theory analysis

Nicholas Longpré, Nicola Beckett, & Ewa Stefanska

 

Community-based case management & the experiences of registered persons in New Zealand

Helen Mackenzie-Auld

 

Desistance, recovery, and justice capital: Putting it all together

Kieran McCartan, & Hazel Kemshall

 

Survey of current practices in the assessment, treatment and management of people convicted of a sexuel offence in Europe

Kieran McCartan

 

Understanding and responding to sibling sexual abuse and its links to family dysfunction

Kieran McCartan

 

Changes in sexual thoughts and behaviors during the COVID-19 pandemic

Allison K. McMahan, Kailey M. Roche, Rosa Dreyhaupt, Michael C. Seto, & Christoffer Rahm

 

Supporting context figures of minor attracted persons and persons who committed sex offences in specialised ambulatory treatment 

Liesbeth Merckx

 

Non-photographic images of child sexual abuse: The risks and public policy responses

Hannah L. Merdian, Sarah Wefers, Hannah K. Bradshaw, & Derek Perkins

 

Relooking at statutory rape laws in Malaysia applied on young offenders: Perspectives of the Malaysian police officers

Taufik Mohammad, & Ricardo Barroso

 

Stop It Now! Scotland - Database analysis and development of data quality standards

Fiona Moran, Odran Doherty, Sarah Graham, Stuart Allardyce, Sean M. Hammond, Derek Perkins, & Hannah L. Merdian

 

Talking for Change: The evaluation of Canada’s first child sexual abuse perpetration prevention psychotherapy intervention 

Sarah Moss, Cory Gerritsen, Skye Stephens, Ian V. McPhail, & Ainslie Heasman

 

Project Paraphile: Evaluation of the effects of a therapeutic intervention

Marek Navrátil

 

A critical evaluation of online child sexual exploitation theories: Current gaps and future directions for psychological research and clinical practice

Grace Nock, Louise Dixon, & Nichola Tyler

 

On the role of bias in risk assessment 

Verena Oberlader

 

‘All virtual roads lead to Rome Trondheim’: Examining online offending paths leading to the sexual exploitation of adolescents

Sarah Paquette, Julien Chopin, & Francis Fortin

 

An examination of opportunities for sexual crimes against adult victims by female sexual offenders 

Amelie Pedneault

 

The application of the Dual Control Model (DCM) on individuals convicted of sexual offenses and the relevance of the concepts of sexual excitation and sexual Inhibition

Martin Rettenberger, Reinhard Eher, Priscilla Gregório Hertz, & Daniel Turner

 

Introducing Circles of Support and Accountability (CoSA) as part of Norwegian probation

Maren Riis, & Lisa Gartner

 

Courtroom use of the VRAG-R in civil commitment of sexually dangerous persons

Jennifer Ritchie, Devon Gibbs, & Brian W. Judd

 

Overview of the Griffith Youth Forensic Service 

John Rynne

 

Explaining the unexplainable: Sexual recidivism in a sample of Norwegian men

Ingeborg Jenssen Sandbukt

 

The impact of testosterone-lowering medication on recidivism in individuals convicted of sexual offenses 

Julia Sauter, Laura M. Lingenti, Martin Rettenberger, Daniel Turner, Peer Briken, & Tatjana Voß

 

@myTabu: Characteristics of the clinical trial and the acceptance of web–based intervention among individuals who have committed sexual offenses against children

Sonja Schröder

 

Supporting context figures of minor attracted persons and persons who committed sex offences at Stop it Now! Flanders (BE)

Alana Schuerwegen

 

The prevalence of mental disorders and the opportunities and limitations of risk assessment for inidividuals convicted of offenses related to child sexual exploitation material (CSEM)

Alexander Seiser, Reinhard Eher, & Martin Rettenberger

 

‘Dual identity’ and the forgotten trauma in the histories of people who have sexually offended

Sarah Senker, & Kieran McCartan

 

The impact of (re)location within multiple perpetrator sexual offenses (MPSOs)

Kristina Shatokhina, & Leigh Harkins

 

Navigating a dark place: What do incels make of their experience and how can we help them?

Brandon Sparks, Alyssa Maryn, & Alexandra Zidenberg

 

A theory of sexual identity development for minor attracted males

Jasmin H. Stevenson

 

Construct validity of SSPI and SSPI-2: Relations with clinical symptoms and sexual development

Filip Szumski, Dominika Bartoszak, Natalia Andrzejczyk, & Mercedes Sakrajda

 

Community attitudes towards institutional child sex offenders

Tiffany E. Taylor, & Andy Williams

 

The adverse childhood experiences of GYFS Clients

Lisa Thomsen

 

Emotions recognition competence of male forensic inpatients who committed a sexual offence (FICSOs)

Luca A. Tiberi, Xavier Saloppé, Audrey Vicenzutto, & Thierry H. Pham

 

Is accurate recognition of emotion expressions associated with lower actuarial and structured professional judgment risk assessment scores? An exploratory research among forensic inpatients

Luca A. Tiberi, Emilie Telle, Xavier Saloppé, Audrey Vicenzutto, & Thierry H. Pham

 

Neuropsychological deficits in men convicted of a sexual offense against children

Daniel Turner, & Martin Rettenberger

 

Assessment and pharmacological treatment of compulsive sexual behavior disorder: The new WFSBP guidelines

Daniel Turner, & Peer Briken

 

Is it all about the format of the message? Exploring factors affecting the perception of reoffence risk 

Kasia Uzieblo, Jeffrey Lauer, Vivienne de Vogel, & Wineke Smid

 

“Sexual predators do not deserve my empathy”: Knowledge about and attitudes towards minor-attracted persons and Stop it Now! in mental health professionals

Kasia Uzieblo, Floor Somers, & Minne De Boeck

 

The characteristics and treatment needs of clients of child sexual abuse prevention programmes: Norwegian and New Zealand samples 

Anja Vaskinn, & Jacinta Cording

 

A relapse prevention therapy programme for juvenile sex offenders (“ThePaS”)

Leonardo Vertone, Marcel Aebi, Daniela Imbach, Thomas Best, & Cornelia Bessler

 

Experiences of autism in prison-based interventions to address sexual offending

Luke Vinter

 

Understanding and deterring online sexual communications with minors: A qualitative study

Sarah Wefers, Tess Dieseth, & Emily George

 

Clinical experiences so far from the Norwegian ‘Det Finnes Hjelp’ programme 

Anne Wold

 

Reducing risk by other means than by treatment. The omnipresence of the correctional system: A case study

Amanda Young-Hauser

Harmful sexual behaviour among children and adolescents: Prevention strategies and proposals for interventions

Oddfrid Skorpe Tennfjord

 

Problematic and harmful sexual behaviour among children and adolescent is not rare. It is estimated that among 20-30 % of sexual assault is committed by a person under 18 years (Barbaree & Marshall, 2008), and about 50 % of adult sexual offenders report deviant sexual interests in adolescence (Finkelhor, Omrod and Chaffin, 2009).
Why children and adolescents show problematic and harmful sexual behavour will however, vary. Studies often look into individual characteristics e.g. developmental problems, traumatization and learning disabilities (Hackett, 2014; Sandvik, Nesset, Berg og Søndenaa, 2017; JanusCentret 2021). Cultural and more community based approaches are more scarce.

This presentation will shed light to understand the link between causes of problematic and harmful sexual behaviour and different prevention strategies, in order to promote healthy sexual behaviour, or «sexual decency», in children and adolescents. The presentation will include an overview of different tools developed in the recent years to enhance healthy sexual behaviour. More targeted interventions where children and adolescents have shown problematic or harmful sexual behaviour, will also be offered.

Oddfrid Skorpe Tennfjord, clinical psychologist, phd. Tennfjord works at The regional center on violence, traumatic stress and suicide prevention, Region Mid-Norway (RVTS Midt). From 2015- 2021 she also worked as an Associate Professor at the Regional Centre for Child and Youth Mental Health and Child Welfare at the Norwegian University of Science and Technology. Tennfjord is the head of the Norwegian Competence Network of children and adolescents displaying problematic or harmful sexual behaviour as well as REBESSA (Resource team children and adolescents with problematic and harmful sexual behaviour). Tennfjord is also project manager of the web site www.seksuellatferd.no

Posters

We are happy to announce that these posters will be presented at our conference in Trondheim, Norway:

 

Ten years of the Swedish telephone help-line project PrevenTell – Lessons learned and future directions 

Roberth Adebahr, Elin Zamore Söderström, Stefan Arver, Jussi Jokinen, & Katarina Görts Öberg

 

Conceptualization of a blended group treatment of patients with deviant sexual preference disorder consuming child abuse material 

Marie Bergmann, & Simon Ewers

 

Are mental disorders associated with recidivism in men convicted of sexual offenses?

Laura Biedermann, Reinhard Eher, Martin Rettenberger, Kathrin Gaunersdorfer, & Daniel Turner

 

Rape in the Czech Republic: Definition, figures, offenders and their treatment 

Šárka Blatníková, & Petr Zeman

 

Psychodynamic countertransference phenomena in group therapy for sex offenders: A case study from the observer's perspective

Susanne Bründl, & Viktoria Märker

 

Self-reported cognitive distortions, treatment retention and recidivism

Manon Duval, Yves Paradis, & Jean-Pierre Guay

 

The impact of ‘the Knock’ and the criminal justice journey for non-offending family members of individuals suspected of IIOC 

Mille Fjelldal-Robertson

 

Internet-administered cognitive behavioral therapy for hypersexual disorder, with or without paraphilia(s) or paraphilic disorder(s) in men: A pilot study

Jonas Hallberg, Viktor Kaldo, Stefan Arver, Cecilia Dhejne, Marta Piwowar, Jussi Jokinen, & Katarina Görts Öberg

 

Assisting decisions in child protection service institutions with the RIC: The Risk Indication in Child sexual abuse

Brigitte C. Hansmann, & Reinhard Eher

 

Summary of current EU-funded prevention projects related to minor attracted persons

Lisann Högström, Tarik Korkutan, Arne Dekker, & Peer Briken

 

Visualized EU mapping of institutional face-to-face (F2F) therapy services for people at risk of committing child sexual abuse

Tarik Korkutan, Lisann Högström, Peer Briken, & Arne Dekker

 

A descriptive model of voyeuristic behavior

Victoria P. M. Lister, & Theresa A. Gannon

 

Patients’ experiences with “Det finnes hjelp”: A low-threshold health service for adults with a sexual interest in children

Jana Kristin Maack, Isak Joramo, Merete Berg Nesset, Camilla Buch Gudde, Line Elisabeth Solbakken, & Marita Sandvik

 

Altered neural and behavioral response to sexually implicit stimuli during a pictorial-modified Stroop task in pedophilic disorder

Christian Mannfolk, Benny Liberg, Christoph Abé, & Christoffer Rahm

 

Paraphilic disorders and compulsive sexual behavior disorder: Presentation of ongoing treatment studies

Josephine Savard

 

A cross-validation of the German version of the Revised Screening Scale for Pedophilic Interests (SSPI-2)

Sita Sophie Sielaff, Reinhard Eher, & Martin Rettenberger

 

Evaluation and implementation of a web- based training program to strengthen efforts to prevent sexual assault and violence

Charlotte Sparre, Stefan Arver, Elin Zamore Söderström, Markus Byström, Josephine Savard, & Katarina Görts Öberg

 

The pilot of a new internet offending assessment framework in Scotland

Geoff Tordzro-Taylor

 

Sexual offenders forensic inpatients who present an intellectual disability: Which specificities?

Audrey Vicenzutto, Luca A. Tiberi, Marine Bral, & Thierry H. Pham

 

The offending behaviour of those sentenced to the Order for Lifelong Restriction (OLR)

Rachel Webb, & Mark McSherry

 

Gender concept in child sexual offenders

Monika Zielona-Jenek

 

 

 

The Why, the Who and the Wherefore: Explanations, Self-Change and Social Friction in Men's Narratives of Sexual Violations

Anja Emilie Kruse

 

In this address, I ask and try to answer the question of what we can learn from the stories that men convicted of sex offenses tell about their sexually violent acts – and the stories they tell about themselves as a person who has committed such acts.

From a narrative criminology approach, the stories told of past harmdoing by those responsible for doing harm may affect their future behavior. This is so because experience is simultaneously represented and (re-)constructed in the telling of narratives, the meaning-making it entails and how storytelling contributes to (dis-)integrate harmdoing into a broader narrative of self, identity and future. The first part of this address will zoom in on the explanations – the why stories – that the 17 men I interviewed for my PhD project (2015-2020) gave in response to questions about how they ended up committing sexual violence.

Social responses to violence – and to stories of violence – may (re-)produce dominant understandings of violence and the harm resulting from it. However, social responses also carry subversive potential to redefine such understandings, potentially recognizing new forms of violence or harm and pushing narratives about selves and acts in new directions.

In the second part of the address, I will discuss the meaning and impact of social responses in and on developing narratives of committing and being convicted for sexual violence. The interpersonal responses that the participants encountered after having committed and been convicted for sex offences turned out to be important factors in the processes they engaged in to make sense of, and come to terms with, their acts and experiences. Some responses were pushing the men to re-evaluate their concepts of violation, violence and consent. Other responses were reinforcing experiences of having been unfairly treated by a victim-centered, over-vigilant justice system, and yet other responses caused stigma, fear and social isolation. Examples of responses and their impact in and on the men’s stories will be discussed in relation to narrative criminological thinking, as well as theorization on what helps or hinders desistance, rehabilitation and reintegration.

 

Anja Emilia Kruse is a postdoctoral fellow at the Department of Criminology and Sociology of Law, University of Oslo, Norway, and a researcher at the Norwegian Centre for Violence and Traumatic Stress Studies (NKVTS) in Oslo, Norway.