Bibliography update

We have added another entry to the Bibliography:

Cortoni, F., Babchishin, K. M., & Rat, C. (2016). The Proportion of Sexual Offenders Who Are Female Is Higher Than Thought: A Meta-Analysis. Criminal Justice and Behavior


Women commit sexual offenses, but the proportion of sexual offenders who are female is subject to debates. Based on 17 samples from 12 countries, the current meta-analysis found that a small proportion of sexual offenses reported to police are committed by females (fixed-effect meta-analytical average = 2.2%). In contrast, victimization surveys indicated prevalence rates of female sexual offenders that were six times higher than official data (fixed-effect meta-analytical average = 11.6%). Female sexual offenders are more common among juvenile offenders than adult offenders, with approximately 2 percentage points more female juvenile sex offenders than female adult sex offenders. We also found that males were much more likely to self-report being victimized by female sex offenders compared with females (40% vs. 4%). The current study provides a robust estimate of the prevalence of female sexual offending, using a large sample of sexual offenses across diverse countries.

I am pleased to see that, especially from this researcher, some time is being put into looking at the numbers.  Even so I suspect that the numbers are higher than even this study states.  If you look at the numbers when it comes to female sex offenders and children the numbers go much higher.


Related Posts:

32 year old woman sexually abuses 6 year old

A story out of Indiana in which a 32 year old woman has been sentenced to 80 years for 2 counts of child molesting.  According to the story she started sexually abusing this child when he was 6 years old and continued for years.  (Full story here)

A few things stand out in this story with the worst being this quote:

Martin’s mother Arlene Martin told detectives Martin had been inappropriate with two younger family members before and was not allowed to be alone with them. She also said she had caught Martin inappropriately touching an infant..

So she had already been offending against other children and an infant and it was never reported?  Sadly this is very common when it comes to female sex offenders.  They are probably the least reported group of sex offenders.

Because of the lack of reporting and the fact that often these cases do not get labeled as rape is why the statistics on female sex offenders are so skewed and so many people are in the dark about them.


Related Posts:

Another study on prevalence rates and female sex offenders

We have posted previously about a study that looked at prevalence rates of male and female sex offenders and found they were about the same.  Now we are adding another study that has found similar results.  According to a CNN article that quoted this study

“The study also found that males and females carried out sexual violence at strikingly similar rates after the age of 18 — 52% of males and 48% of females. The study classified sexual violence into a few categories: foresexual or presexual contact (kissing, touching, etc. against their will), coercive sex, attempted rape, and completed rape. Women were more likely to instigate unwanted foresexual contact.”

Ybarra, M. L., & Mitchell, K. J. (2014). Prevalence rates of male and female sexual violence perpetrators in a national sample of adolescents. Jama Pediatrics, 167(12), 1125-1134.


Importance  Sexual violence can emerge in adolescence, yet little is known about youth perpetrators—especially those not involved with the criminal justice system.

Objective  To report national estimates of adolescent sexual violence perpetration and details of the perpetrator experience.

Design, Setting, and Participants  Data were collected online in 2010 (wave 4) and 2011 (wave 5) in the national Growing Up With Media study. Participants included 1058 youths aged 14 to 21 years who at baseline read English, lived in the household at least 50% of the time, and had used the Internet in the last 6 months. Recruitment was balanced on youths’ biological sex and age.

Main Outcomes and Measures  Forced sexual contact, coercive sex, attempted rape, and completed rape.

Results  Nearly 1 in 10 youths (9%) reported some type of sexual violence perpetration in their lifetime; 4% (10 females and 39 males) reported attempted or completed rape. Sixteen years old was the mode age of first sexual perpetration (n = 18 [40%]). Perpetrators reported greater exposure to violent X-rated content. Almost all perpetrators (98%) who reported age at first perpetration to be 15 years or younger were male, with similar but attenuated results among those who began at ages 16 or 17 years (90%). It is not until ages 18 or 19 years that males (52%) and females (48%) are relatively equally represented as perpetrators. Perhaps related to age at first perpetration, females were more likely to perpetrate against older victims, and males were more likely to perpetrate against younger victims. Youths who started perpetrating earlier were more likely than older youths to get in trouble with caregivers; youths starting older were more likely to indicate that no one found out about the perpetration.

Conclusions and Relevance  Sexual violence perpetration appears to emerge earlier for males than females, perhaps suggesting different developmental trajectories. Links between perpetration and violent sexual media are apparent, suggesting a need to monitor adolescents’ consumption of this material. Victim blaming appears to be common, whereas experiencing consequences does not. There is therefore urgent need for school programs that encourage bystander intervention as well as implementation of policies that could enhance the likelihood that perpetrators are identified.

With more than 1 million victims and associated costs of almost $127 billion each year, sexual violence is a significant public health problem.1 In addition to societal costs, the impact on the individual can be high, including increased rates of posttraumatic stress disorder,2 physical health problems,3 and suicidal behavior.4

Sexual violence can emerge in adolescence,5– 7 making this developmental time a critical period of inquiry. Nonetheless, nationwide estimates for adolescent perpetrators of sexual violence in community samples are lacking8 and state estimates vary significantly.1 Moreover, almost all of the sexual violence perpetration literature focuses on boys as the sexual aggressors and females as victims.9– 12 In studies that include both adolescent males and females as perpetrators, females are less likely to engage in sexually violent behavior than males.13– 15 Research examining specific event characteristics of male and female sexual offenders is even more limited and is conflicting as to whether differences exist.16,17 There is a clear need for a better understanding not just of prevalence rates but also how sexual violence may be different for older and younger adolescents as well as males and females. Given emerging interest in possible links between exposure to sexual material and sexual behavior and attitudes18– 20 as well as violent pornography and violent sexual behavior,21 further research examining the associations between media and sexual violence also is critical.


It is interesting to see this study as other research has pointed to female offenders offending against children/adolescents more than adults.


Related Posts: