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Dive into the research topics where Jo Thakker is active.

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Featured researches published by Jo Thakker.


Psychology Crime & Law | 2014

The endorsement of cognitive distortions: comparing child pornography offenders and contact sex offenders

Hannah Lena Merdian; Cate Curtis; Jo Thakker; Nick Wilson; Douglas P. Boer

This study examined the endorsement of cognitive distortions in child pornography offenders (CPOs), using an established assessment tool, the Abel and Becker Cognition Scale. The scale was expanded to include cognitions specific to child pornography offending, extracted from Howitt and Sheldons Children and Sexual Activities Inventory (C&SA). Three samples of CPOs, child sex offenders and offenders with both offence types responded to the cognition items. An exploratory Principal Component Analysis suggested six main components of the scale. CPOs were significantly less likely to endorse these statements in general, and this was more pronounced on items that project blame onto the child or other people, describe a need for power and consider children as sexually active. The statements extracted from C&SA did not differentiate between the groups. These findings are discussed under consideration of the relationship between cognitive distortions and contact sex offending, and in reference to the general criticism concerning the definition and appropriate measurement of cognitive distortions.


Sexual Abuse: A Journal of Research and Treatment | 2018

Fantasy-Driven Versus Contact-Driven Users of Child Sexual Exploitation Material: Offender Classification and Implications for Their Risk Assessment.

Hannah Lena Merdian; Nima Moghaddam; Douglas P. Boer; Nick Wilson; Jo Thakker; Cate Curtis; Dave Dawson

Since the advent of the Internet, convictions for the possession, display, trading, and distribution of child sexual exploitation material (CSEM) have risen steadily, but little is known about their appropriate assessment and treatment, especially concerning their risk of reoffending. It has been suggested that a conceptual distinction of fantasy- versus contact-driven CSEM users might be of merit. Sixty-eight offenders recruited from sex offender treatment providers were assessed via an anonymous computer survey including a variety of clinical and risk-related variables; the findings showed differences in the psychological profiles between CSEM users and contact child sex offenders. Numerical and spatial methods of data analysis were used to identify subgroups of CSEM users; these confirmed the twofold distinction of fantasy- versus contact-driven offending. The spatial representation of participants identified three dimensions as crucial in the classification of these subgroups: direct sexual contact with a minor, possession of fantasy-generating material, and social contact with other users with a sexual interest in minors; potentially differentiating distinct offender subgroups with different risks and needs. The current study informed the development of an empirical model of CSEM users that could aid in the assessment of risk of reoffending and cross-over to contact sex offending.


Archive | 2016

Desistance in Offenders with Mental Illness

Svenja Göbbels; Jo Thakker; Tony Ward

The cessation of offending has been associated, amongst other factors, with age or maturation, intimate relationships (e.g., marriage), social support, work stability, cognitive transformation, high expectations from others (i.e., the ‘Pygmalion Effect’), being able to disengage from one’s criminal past (‘knifing off’), and spirituality (for an overview see Laws and Ward, 2011). While there are many factors associated with desisting from crime, desistance is often defined by the absence rather than the presence of something. Thus, while it is most certainly something, desistance is quite difficult to define and to measure (e.g., Laws and Ward, 2011; Maruna, 2001; Walker et al., 2013b).


Clinical Psychology Review | 2008

Rape: psychopathology, theory and treatment

Theresa A. Gannon; Rachael M. Collie; Tony Ward; Jo Thakker


Behaviour Change | 2003

A Descriptive Model of the Homicide Process

Emma Cassar; Tony Ward; Jo Thakker


Behaviour Change | 2010

Relapse Prevention: A Critique and Proposed Reconceptualisation

Jo Thakker; Tony Ward


Sexual deviance : theory, assessment, and treatment | 2008

Rape: assessment and treatment

Jo Thakker; Rachael M. Collie; Theresa A. Gannon; Tony Ward


Behaviour Change | 2010

Rape Treatment: An Overview of Current Knowledge

Jo Thakker; Theresa A. Gannon


Sex Offenders: A Criminal Career Approach | 2015

Criminal career features in theories of sexual offending

Jo Thakker; Tony Ward


Archive | 2014

The good lives model of offender rehabilitation: A case study.

Jo Thakker; Tony Ward; Chi Meng Chu

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Tony Ward

Victoria University of Wellington

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Rachael M. Collie

Victoria University of Wellington

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