Paedophiles identified accurately with implicit association tasks

Paedophiles identified accurately with implicit association tasks

A combination of two tasks for implied sexual associations has distinguished – with more than 90 per cent certainty – a group of paedophilic men from a group of men with a sexual preference for adult women. In the long term this could lead to a diagnostic test, for example for men who have applied to work with children. Psychologists at Radboud University Nijmegen will publish their findings in the journal Archives of Sexual Behavior.

This study was the first to work with paedophilic men who were not imprisoned or confined for involuntary psychiatric treatment in a clinic. It reported a highly significant effect: the tests distinguished the paedophile group from the controls with more than 90 per cent accuracy. Furthermore, in both groups of subjects (paedophiles and heterosexual non-paedophiles) one of the tasks (the Picture Association Task, see below) indicated positive as well as negative associations with sex with either children under twelve or adult women. Stated another way: the test showed that paedophiles not only have positive associations with children and sex, but also with adult women and sex. In the control group, this was the exact opposite.

Motivation for the study

There is growing interest for measuring implicit associations in . These are associations that occur automatically, are partly unconscious and hard to repress. The question addressed by the researchers was the following: can such a task be used to detect implicit sexual associations in paedophiles (people with a for children) and paedosexuals (people who act according to this preference)?

Novel aspects of the study

In recent years, various studies have been conducted with incarcerated paedosexuals using tasks that measure these implicit sexual associations. The research conducted by the Nijmegen differs from these studies in two important ways: it used not one task, but a combination of two tasks, and the paedophiles who participated in the study were not incarcerated or involuntarily committed to a clinic. In any case, that was the situation at the time of the study; one of the subjects had previously been incarcerated.

Study participants

The participants in the study were all men, as paedophiles are usually male. Through an association of self-proclaimed paedophiles, the researchers recruited 20 paedophile participants. Half of this group reported that they were paedophile, but not paedosexual; the other half of the group (under conditions of strict anonymity) reported having sexual experiences with children. A group of 20 self-reported heterosexual men were recruited as a control group. They were comparable in terms of age and education level, but reported no sexual associations with children. Both groups understood that they were participating in a study on implicit sexual associations with children.


Both tasks used in the study have the aim of ascertaining implicit associations. In the first task, the subjects listened to 20 neutral words (such as earth, beige, theory, store) combined randomly with sex-relevant words (such as erection, nude, love, caressing) and 20 pictures of adults (males and females) and children. By clicking on a left or right button, the subjects were asked to classify whether each picture was sex-relevant or neutral, and adult or child. For example, if the left button had to be pressed for sex-relevant and child, for the paedophile participants this was a congruent association, and for participants in the control group this was incongruent. This difference was shown by their reaction times. The faster one is combining two different categories (children and sex on the same button), the stronger the association between these concepts.

The structure of the Picture Association Task was comparable. Neutral or sex-related words were presented on top of pictures of or men or boys or girls (all wearing swimwear). The participants were asked to ignore the background and to categorise the words as quickly as possible.

By combining the two tasks, the distinction between the paedophile group and the , based on implicit associations, was more than 90 per cent accurate. Within the group of paedophile participants, no distinction could be made between the results of the self-identified paedophile and paedosexual participants.

Future research and application

Because the results of this 'combination task' are so accurate, the researchers expect interest in the diagnostic use of this approach. For example, it could be used to determine the implicit sexual associations of men who have applied to work with children. However, according to lead researcher Matthijs van Leeuwen, such applications should be used cautiously. 'Firstly, this study concerns a single test involving 40 male participants. Although the results were encouraging, and the number of participants was high enough to test this method, for greater certainty the study should be repeated with a larger group. Secondly, even a very high level of certainty does not mean that a task is fool proof: you can classify a person incorrectly. And thirdly, can you really disqualify people from certain professions because of their thoughts? This is an ethical-legal aspect, which should be studied carefully by others.'

'Therefore, more research is necessary', states the second author, Rick van Baaren. 'We would very much like to work together with other parties on follow-up research and consider the societal implications of this study.'

Explore further

Can brain scans be used to detect pedophiles?

More information: Matthijs van Leeuwen, Rick van Baaren, Farid Chakhssi, Marijke Loonen, Maarten Lippmann, Ap Dijksterhuis, 'Assessment of implicit sexual associations in non-incarcerated pedophiles' Archives of Sexual Behaviour, … 07/s10508-013-0094-0 , Online April 24, 2013.
Journal information: Archives of Sexual Behavior

Citation: Paedophiles identified accurately with implicit association tasks (2013, April 25) retrieved 16 October 2019 from
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User comments

Apr 26, 2013
90 percent doesn't sound that great given the stakes.

And don't get me started on the demented belief that women are incapable of being paedophiles. They specifically mention using this for *men* wishing to work with children. This myth that women never or rarely offend compared to men puts lots of kids in danger.

Apr 26, 2013
@Sean_W, the evidence indicates that men are far more likely than women to be paedophiles http://en.wikiped...estation

Studies like this are a step in the right direction but it would be even better if the tests were subliminal, so that they could be applied via web adverts, etc to identify possible suspects, although, that raises the spectre of '1984' or something similar. The most important thing is to understand the origin of this disorder and treat those afflicted.

Apr 26, 2013
the origin of the "disorder" is that fertility starts when?
not to mention that when fathers are absent, it starts earlier

then add to it that desperate sexualized feminist women like to dress like little school children to attract mates, then dress their children up like pole dancing hookers, and do so because of the crap fake work of meade and kinsey...

it might have something to do with it...

cant sexualize the society like kolontai and the feminists want if you dont do it up and down the scale

or do you forget that the little coochie snorcher that could in the vagina monologues is a good rape when a older woman drugs a young girl into pederastic fun.

what about the schools forcing young girls to kiss each other, while having a course on how to identify sluts for the boys?

its too funny to watch all this in a sad way...

Apr 26, 2013
Sexual Behavior in the Human Female that there seems to be no reason, apart from "cultural conditioning," that a child should be "disturbed at having its genitalia touched, or disturbed at seeing the genitalia of other persons, or disturbed at even more specific sexual contacts," and going on to implicate "the current hysteria over sex offenders" as the real danger to children (p. 121).

see? you think they want to stop it, but they dont want you to stop it, they want you to shut up and believe they do.

but you only have to read the stuff they think is great to realize where things are coming from...

kinsey and the left have always sort to normalize what we used to call sexual deviancy. the problem gmurphy has is that he thinks that this kind of thing is unnatural, when the roman ideal they love, made such quite normal...

gmurphy is not as far along in development as the other progresssives are. (And i can quote lots of them to you if you want - not just kinsey... but meade too)

Apr 27, 2013
Making policy based on a potential for criminal activity, and not a past history of it, is a dangerous precedent.

Apr 27, 2013
As a society we should start by testing politicians and the most affluent since they have the greatest opportunity and potential to abuse others.

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