Sexual abuse history among adult sex offenders and non-sex offenders: A meta-analysis

Department of Psychology, University of Lethbridge, Alberta, Canada.
Child abuse & neglect (Impact Factor: 2.34). 04/2009; 33(3):179-92. DOI: 10.1016/j.chiabu.2008.07.004
Source: PubMed

ABSTRACT The sexually abused-sexual abuser hypothesis states there is a specific relationship between sexual abuse history and sexual offending, such that individuals who experience sexual abuse are significantly more likely to later engage in sexual offenses. Therefore, samples of adult sex offenders should contain a disproportionate number of individuals who have experienced sexual abuse, but not necessarily other types of abuse, compared with samples of other types of offenders.
We compared rates of sexual and other forms of abuse reported in 17 studies, involving 1,037 sex offenders and 1,762 non-sex offenders. We also examined the prevalence of different forms of abuse in 15 studies that compared adult sex offenders against adults (n=962) and against children (n=1,334), to determine if the sexually abused-sexual abuser association is even more specific to individuals who sexually offend against children.
We observed a higher prevalence of sexual abuse history among adult sex offenders than among non-sex offenders (Odds Ratio=3.36, 95% confidence intervals of 2.23-4.82). The two groups did not significantly differ with regard to physical abuse history (OR=1.50, 95% CI=0.88-2.56). There was a significantly lower prevalence of sexual abuse history among sex offenders against adults compared to sex offenders against children (OR=0.51, 95% CI=0.35-0.74), whereas the opposite was found for physical abuse (OR=1.43, 95% CI=1.02-2.02).
There is support for the sexually abused-sexual abuser hypothesis, in that sex offenders are more likely to have been sexually abused than non-sex offenders, but not more likely to have been physically abused. We discuss potential mechanisms for the relationship between sexual abuse history and sexual offending, including the possibility that a third factor might account for the relationship.
The most obvious implications of these findings is that the prevention of sexual abuse of children, either through prevention programs directly targeting children or through treatment programs targeting individuals who are likely to sexually offend against children (e.g., known sex offenders against extra-familial boys), may eventually reduce the number of sex offenders. This implication is dependent, however, on a causal role of childhood sexual abuse, and on the effectiveness of prevention and treatment practices.

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Available from: Michael C Seto, Sep 26, 2015
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    • "child sexual abuse have been victims of sexual abuse in childhood (e.g., Burton, 2003; Jespersen, Lalumière, & Seto, 2009; Salter et al., 2003). "
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    • "The psychological literature exploring the relationship between childhood sexual abuse and later sexual offending is far from clear. Some research supports a link (Glasser, Kolvin, Campbell, Glasser, & Farrelly, 2001; Jesperson, Lalumière, & Seto, 2009), but it is very difficult to accurately estimate the proportion of victims that do later become offenders and results from studies vary substantially (Salter et al., 2003). According to Glasser et al. (2001), the nature of the abuse, the severity, and the relationship between the victim and the perpetrator are important factors to take into account when considering its impact on victims later in life In Hickey's (2002) model, psychological trauma at such a young age is thought to disrupt normal personal development to a point where the "
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    • "Therefore, we hypothesize that the concentration of sexual offending within families is (partly) due to incest victims being at higher odds of becoming sex offenders (Hypothesis 2a). We argue that this explanation is especially relevant for the concentration within families of sex offending against minors, as previous research shows that juvenile as well as adult sex offenders who commit crimes against children are more likely to report a history of childhood sexual abuse than sex offenders who commit crimes against adults or peers (Bijleveld & Hendriks, 2007; Jespersen et al., 2009). In addition, victims of childhood sexual abuse appear to be likely to commit the same kinds of sexual crimes as they experienced as a victim (Burton, 2003; Veneziano et al. 2000). "
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