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Aggression and Violent Behavior 14 (2009)5-12
Contents lints available at ScienceDirect
Aggression and Violent Behavior
S
Examining the modus operandi of sexual offenders against children and its
practical implications
Benoit Leclerc a•*, Jean Proulx 6, Eric Beauregard
• Schad of OiminoloRy and Criminal Justice. Griffith University. Brisbane. Qtreerulead. 4111. Australia
b Schou( of Criminology. Uniwrsity of Monbral & Research Centre Philippe•Hnrl of Montreal. TO 903 bout llenri-Bouroswa est Montreal. Quebec. Canada JIIC Jill
School of Criminology. Simon kin." University. 8886 Unitersift Drive. &unity. Minch Columba. Conalo USA IS6
ARTICLE
INFO
Article history:
Received 14 March 2006
Received in revised form 26 July 2008
Accepted 30 July 2008
Availabk online 7 Anson 2008
Keywords:
Child sexual abuse
Sexual ofknding
Mots operandi
Treatment
Situational creme prevention
Contents
ABSTRACT
The purpose of this article is to review the theoretical, empirical, and practical implications related to the
modus operandi of sexual offenders against children. First. the rational choice perspective in criminology is
presented. Second, descriptive studies aimed specifically at providing information on modus operandi of
sexual offenders against children are also presented. This is followed by research that investigates the links
between the modus operandi of sexual offenders against children and various factors such as victim
characteristics. Third, offenders' treatment. as well as situational crime prevention implications in regards to
modus operandi. is discussed in order to highlight their respective potential for the prevention of child sexual
abuse.
0 2008 Elsevier Ltd. All rights reserved.
1.
Theoretical context
1.1.
The rational choke perspective in criminology
1.2.
The crime-commission model in criminology
2.
Empirical studies
21.
Age of the offender
2.2.
Age of the victim
23.
Gender of the victim
2.4.
Offender-victim relationship
2S.
Deviant sexual fantasies
3.
The benefits of modus operandi studies
3.1.
Treatment implications of modus operandi studies
3.2.
Situational crime prevention implications of modus operandi studies
4.
Conclusion
1
References
1
In their empirical studies on sexual offenses against children,
Kaufman. Hilliker and Daleiden (1996) define the modus operandi as
"the pattern of behaviors that perpetrators display in the periods prior
to, during, and following illicit sexual contact' (p. 18). Another
definition is provided by Douglas. Burgess, Burgess and Ressler
• Corresponding author. Tel.: •61 7 3735 5823.
&mod address: hleclerctegriffithAduau (B, Leclerc).
1359-1789/S - see front matter 0 2008 Elsevier Ltd. All rights reserved.
doi:10.10166a0.2008.08.001
(1997), who define modus operandi as 'the actions taken by an
offender to perpetrate the offense successfully" (p. 353). Over the
years, the interest regarding the study of the modus operandi of sexual
offenders against children has increased. As an example, a series of
modus operandi studies have been carried out by Kaufman and his
colleagues (e.g. Kaufman, Hilliker, & Daleiden. 1996) to provide
empirical information for prevention purposes. As the rational choice
perspective in criminology focuseson thecriminal decision-making in
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& Were Cr or. /Aggression and Violent Behavior 14 (2009) 5-12
relation to crime commission (Cornish, 1993), which includes the
strategies adopted by the offender, it represents a useful framework to
better understand the modus operandi of offenders.
I. Theoretical context
1.1. The rational choice perspective in criminology
The starting point of the rational choice perspective on criminal
behavior is that criminal acts are never senseless, but purposive
(Clarke & Cornish, 2001; Cornish &Clarke. 1986). Offenders are seen as
rational individuals who commit crimes in an attempt to satisfy their
need for rewards such as money, sexual intercourse, elevated status,
and excitement. Cornish and Clarke (2002) also state that "the choice
of methods for carrying out the crime, and the decision-making
involved, are also best regarded as instrumental behaviors in the
service of offenders' goals" (p. 41). Even though decision-making is
constrained by time, the offender's cognitive abilities. and the
availability of relevant information (Cornish & Clarke, 1987; see also
Johnson & Payne. 1986), offenders nevertheless attempt to minimize
their risks of apprehension and maximize their gains. Offenders are
thus perceived as decision makers, whose choices are directed by the
values, the costs, and the likelihood of obtaining desired outcomes.
The rational choice perspective is particularly relevant since it "offers
just such a fluid, dynamic picture—one that views offending as more
present-oriented and situationally influenced" than other criminolo-
gical theories (Clarke & Cornish, 2001, p. 32). Situational factors such
as the resistance of the victim, are seen as having an important role
since it influences the decisions of the offender and consequently, the
offender-victim interaction that follows when a crime is committed
(Tedeschi & Felson, 1994). For example, Elliott, Browne. and Kilcoyne
(1995) found that 39% of sexual offenders in their sample said that
they would use threats or violence to overcome child resistance if
necessary. Because crime is viewed as a dynamic process influenced
by situational factors, offenders are seen as individuals that may
improve their decision-making through experience and learn to
modify their strategies to commit crimes.
An important feature of this perspective is that it emphasizes the
importance of the behaviors adopted by the offender to more fully
comprehend the "how" of the crime. From a rational choice perspective.
Proulx, Ouimet. and Lachaine (1995) conducted an exploratory study
examining the decisions and behaviors of sexual offenders against
children to better understand their crime-commission process. These
authors suggested that the offender has to make a series of decisions
before sexually abusing a child. According to Froth( et al. (1995), the
offender has tochoose his hunting ground, that is, the places where he is
likely to encounter a potential victim and the time when he is going to
offend. Following these decisions, the offender has to select a victim
according to his/her erotic value (age, gender and physical character-
istics), to his/her vulnerability(physical and/or psychological)and to his/
her familiarity. Finally, the offender has to decide how he is going to
approach the victim, and which strategy he will adopt to get the victim
involved in sexual activity. But more importantly. this study suggested
that the strategies adopted by a sexual offender may be influenced by
situational factors. For instance, it showed that a public hunting ground
and a stranger victim are characteristics that may be related to using
coercion for obtaining sexual contact. Ouimet and Proulx (1994) also
suggested that the more distance traveled by the offender to find a
potential victim, the higher the level of violence used to commit the
Clime
1.2. The crime-commission model in criminology
The rational choice perspective was used as the theoretical frame-
work to derive models of criminal behavior, each implying a distinctive
decision process influenced by a different set of factors (Clarke &
Cornish, 1985, 2001: Cornish & Clarke. 1986). For the purpose of this
study, the model of interest is the criminal event model which
accounts for the commission of a specific Clime. Because the initial
criminal event model involved only one stage of thecrime-commission
process, that is, target selection, Cornish (1994) proposed the concept
of crime scripts to assist in the analysis of the whole crime-commission
process. Crime scripts are step-by-step accounts of the strategies
adopted by offenders tocommit crimes. The most important benefit of
the Clime script concept is that it provides a framework to system-
atically investigate all of the stages of the crime-commission process of
a specific crime and in as much detail as existing data allow (Cornish.
1994). It also helps to identify the decisions that the offender must
make at each stage as well as the situational variables such as obstacles
that might lead the offender to alter his initial modus operandi.
Cornish (1998) was the first to elaborate crime-commission script
models for sexual offenses against children. He outlined two particular
scripts related to sexual abuse of male victims, that is, a script to
account for offenses committed by stranger offenders in public places
and another explaining offenses perpetrated by offenders in residen-
tial institutions. As an illustration, the latter script is the following:
preparation (elaboration of sexual fantasies, access and use of child
pornography, network of other offenders), entry to setting (already in
setting), preconditions (using a legitimate role, right of access to all
aspects of setting. absence of capable guardians), instrumental
precondition (selecting a potential victim), instrumental initiation
("grooming'), instrumental actualization (removal or access to an
unsupervised place, lack of escape routes). doing (sexual assault),
postcondition (successful disengagement) and exit from setting.
Although these crime-commission script models were not empirically
verified, they showed the relevance of studying sexual offenses using
this approach. Moreover. the crime-commission script model repre-
sents a sequence of instrumental actions adopted prior, during, and
following the criminal act and thus, is consistent with the modus
operandi temporal framework provided by Kaufman, Hilliker, and
Daleiden (1996).
Somewhat influenced by Cornislis work (1998), Beauregard, Proulx,
Rossmo, Leclerc, and Allaire (2009) conducted a study on serial sex
offenders to identify particular crime-commission scripts with this
population. This study analyzed 361 criminal events reported by 72
serial sex offenders, mostly offenders against women. Using hierarchical
cluster and multiple correspondence analyses, the authors identified
three different crime-commission scripts: (1) coercive; (2) manipula-
tive: and (3) non-persuasive. that is, no particular strategy. This study
also suggests that sexual offenders can switch from one strategy to
another according to environmental factors, such as the crime location,
when committing crimes.
2. Empirical studies
The first studies which specifically analyzed the modus operandi of
sexual offenders against children were conducted in the late 1980s
(Berliner & Conte, 1990; Budin & Johnson, 1989; Christiansen & Blake.
1990; Conte, Wolf. & Smith, 1989: Lang & Frenzel, 1988 ) (see Table 1).
These studies were mainly undertaken to provide information for
prevention purposes.As Berliner and Conte (1990) pointed out: "Much
current prevention knowledge is based on anecdotal information
about the victimization process. Understanding the process... will
help locate areas for prevention education both for already victimized
children and for children in general" (p. 29). These studies provided
crucial data about the strategics adopted by sexual offenders against
children to commit their crimes. For example, offenders have been
found to gradually desensitize the victim to physical contact before
moving to sexual touch (Berliner & Conte. 1990; Christiansen & Blake.
1990). Offenders also use some type of coercion and threats (Berliner
& Conte, 1990; Budin & Johnson, 1989; Conte el a4 1989; Lang &
Frenzel, 1988), particularly when manipulation fails (Christiansen &
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Budin and
Johnson (1989)
Cluishatisen and
Blake (1990)
Conte et al. (1989)
Elliott et al (1995)
Kaufman. Orts et al
(1996)
Kaufman. Wallace.
Johnson and Reeder (1995)
tang and Frenzel
(1988)
Leclerc et al. (2005;
Proulx et al. (1995)
Smallbone and
Wortley (2000)
van Dam (1996. 2001)
Wortley and
Smallbone (2006)
Young (1997)
Table 1
Clescuptive research on the modus operandi of sexual offenders against children
Study
Sample characteristics
n
Modus operandi statelD
investigated
Berliner and Conte (1990)
Child victims of sexual
23
abuse reavited from the
Sexual ASSaUlt Center in
Seattle (USA)
Incarcerated adult
72
offenders (USA)
Adult incest offender/
7
following treatment
(USA)
Adult offenders
20
following treatment and
recruited at the
Northwest Treatment
Associates-Mercer in
Seattle (USA)
Treated adult offenders
91
moulted from
treatment programs.
probation. special
hospitals. and prisons
(England)
Adolescent and adult
offenders following
treatment in five states
(USA)
Victims' reports meabuse 106
(USA)
Adult offenders
102
following treatment in
the Sex Offender
Program at Alberta
Hospital Edmonton
(Canada)
Adult offenders
23
following treatment and
recruited from prisons.
probation and
penitentiary settings.
parole offices and
treatment programs in
Quebec (Canada)
Incarcerated adult
10
offenders in Quebec
(Canada)
Incarcerated adult
182
offenders in Queensland
(Australia)
Adult offenders
21
following treatment and
recruited at the
Northwest Treatment
ASSOC tees in Seattle
(USA)
Incarcerated adult
169
offenders in Queensland
(Australia)
Child sexual assault
45
case-files from the
Victim-Witness
Assistance Programme
in WindsortEssex
County. Ontario
(Canada)
Gaining cooperation and
keeping the victim silent
Gaining access to slain
treat. and keeping the
victim silent
Wining trust.
cooperation and keeping
the victim silent
Gaining access to victim
and cooperation
Gaining access to listing
cooperation. and
keeping the victim silent
140 Gaming cooperation
Gaming cooperation
Gaming cooperation and
keeping the victim silent
Gaining trust.
cooperation and keeping
the victim silent
Gaining cooperation
MI modus operandi
stages
Gaining access to victitn.
trust. cooperation and
keeping the victim silent
Gaining access to victim
and obtaining time alone
with victim
Gaining access to INTIM.
trust. and cooperation
Blake. 1990). These studies, however, did not define the concept of
modus operandi and were lacking reliable instruments to assess all
stages of modus operandi (e.g gaining access to the victim, gaining the
trust of the victim) Consequently. several stages of the modusoperandi
could not several be systematically investigated, and specific strategies
at various stages of modus operandi could not be identified either.
An important contribution of the Modus Operandi Questionnaire
(MOQ) developed by Kaufman (1991) is that it provides a temporal
framework to collect data on all aspects of offender-victim interaction
during the crime-commission process. This framework places beha-
viors along a temporal continuum beginning with offenders tactics to
access victims and includes strategies adopted to gain victims' trust,
gain victims' cooperation in sexual activity, and maintain victims
silence following the abuse. With this instrument, Kaufman and his
colleagues undertook a series of studies to examine the modus
operandi of sexual offenders against children. Because of the inherent
qualities of this instrument (e.g., good internal consistency of the
scales, see Kaufman et
1997, 1998), other researchers also adopted
this means to study modus operandi (Leclerc. Proulx & McKibben.
2005; Smallbone &Wortley, 2000). Although these later studies are of
significant interest, the modus operandi alone does not fully explain
the crime-commission process. Factors, such as victim characteristics
and situational variables, may be related and may influence the modus
operandi which may, in turn, have consequences on the outcome of
the crime. Further, as stated by rational choice theorists, especially by
Cornish (1994), offenders can adapt themselves to particular factors,
such as situational variables, and they can learn and innovate by
adopting new strategies when necessary (Lacoste & Tremblay, 2003).
This makes the study of relationships between modus operandi and
other factors necessary to understand the crime-commission process.
Some studies examined the relationship between modus operandi
and other characteristics with multivariate analyses. In general,
research on sexual offending has shown that the modus operandi
may vary according to the offender's age, victim characteristics and
situational factors.
2.1. Age of the offender
As indicated in Table 2, one such study was conducted by Kaufman
et al. (1998). These authors compared the modus operandi of
adolescent and adult offenders and found that the age of the offender
(adolescent or adult) might be related to modus operandi. They
reported two important differences between adolescent and adult
modusoperandi. First, their results showed that adolescent, compared
to adult offenders, adopted strategies more frequently tocommit their
crimes. Second, adolescents also reported having used violence more
Yak 2
Research linking modus operandi of sexual offenders against children with other
characteristics
Study
Sample characteristics
n
Characteristics related to
modus operandi
Adolescent offenders
following treatment in six
different states (USA)
Adolescent and adult
offenders following treatment
in six different states (USA)
Police investigative records of
incarcerated adolescent
offenders at the FM Academy
in Quito. %/Stink% (USA)
Kaufman. Hilliker
Adolescent offenders
and Daleiden (1996) following treatment and
incarcerated in Ohio (USA)
Caller et al.
(2002)
Carter et al.
(2005)
Hunter et al.
(2000)
Kaufman et al.
(1998)
Leclerc et al
(2006)
247 Non-deviant and deviant
sexual fantasies
228 Non-deviant and deviant
sexual fantasies
126 Victim's vulnerability
179
Adolescent and adult
228
offenders following treatment
in Minnesota. Ohio. Oregon.
and Washington (USA)
Incarcerated adult offenders
226
assessed between 1995 and
2000 at the Regional
Reception Centre of Ste-Anne-
des-Plaines. Quebec (Canada)
Gender of victim. age of
youngest victim and
offender-victim
relationship
Age of the offender
(adolescent or adult) and
offender-victim
relationship
PflOf offending
achievement. age of the
victim and deviant sexual
fantasies
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a Leclerc er at /Aggression and Violent Beho‘lor 14 (2009)5-12
often than adult offenders. To explain these results, Kaufman et al.
(1998) suggested that adult offenders benefit from a special status
(e.g., sociaL parental) which may reduce their need to adopt strategies
as often as adolescent offenders do. As stated by Kaufman. Orts el aL
(1996), offenders may also progress developmentally from the use of
coercive strategies to more sophisticated methods like manipulation.
Victim characteristics, such as the age, however, could have a more
prominent impact on modus operandi.
2.2. Age of the victim
With a sample of 226 adult offenders, Leclerc. Carpentier, and Proulx
(2006) studied the impact of several factors,such astheage of the victim
(0-13 years old). on the likelihoodof adopting a manipulative, a coercive
or a non-persuasive strategy to involve the victim in sexual activity.They
found that adult offenders who sexually abuse olderchildren were more
likely to use a manipulative, rather than a non-persuasive strategy. In
addition, Kaufman, Hilliker. and Daleiden (1996) found that various
manipulative and coercive strategies adopted by adolescent offenders
vary as a function of the age of the victim. Using a sample of 179
adolescent offenders, these authors examined the relationship between
the age of the youngest victim (0-3 years. 4-6 years, 7-9 years, 10-
12 years,13-17 years)and several sets of strategies at different stages of
the modus operandi. Except for the "using alcohol and drugs" set of
strategics to gain the victinis cooperation for which the frequency of use
followed a linear increase across all age groups, the frequency of use for
other sets of strategies (giving gifts and giving love/attention to gain
victim's trust, giving love/attention and threatening to alter victim-
offender relationship to gain victim's cooperation, and threatening to
withdraw benefits to maintain victim's silence) rose as the victim's age
increased from birth (0-3 years) to middle childhood (4-9 years) and
then decreased as the victim's age increased from middle childhood to
adolescence (10-17 years). While the age of the victim has an impart on
the modus operandi. research is not as conclusive as with the gender of
the victim.
2.3. Gender of the victim
Studying the effects of victim gender on modusoperandi, Kaufman.
tinker. and Dalciden (1996) found that several sets of strategies
(giving gifts and giving love/attention to gain the victim's trust, giving
love/attention. threatening to harm the victim's friend and family and
to alter the victim-offender relationship to gain the victim's coopera-
tion, and threatening to physically harm and to withdraw benefits to
maintain the victim's silence) were more frequently used by offenders
who abused both male and female victims than offenders who abused
only male or female victims. However, the modusoperandi of the latter
groups did not differ. As suggested by the results obtained by Hunter,
Hazelwood, and Slesinger (2000), it is also possible that the effect of
victim gender on modus operandi depends on other factors such as
victim age, and victim resistance.
2.4. Offender-victim relationship
Another important factor linked to the modus operandi is the
offender-victim relationship (intrafamilial or extrafamilial). Kaufman,
Hill iker and Daleiden (1996), Kaufman. Orts et al. (1996), and Kaufman,
Hilliker. Lathrop, et aL (1996) studied the relationship between this
variable and adolescent modus operandi. They found that offenders
who primarily selected intrafamilial victims more frequently adopted
strategies which consisted of giving gifts to gain the victim's trust,
giving love/attention and threatening to alter the victim-offender
relationship to gain the victim's cooperation, and threatening to
withdraw benefits to maintain the victim's silence titan those prima-
rily selecting extrafamilial victims. In another study, Kaufman el al.
(1998) examined the impact of the offender-victim relationship on
both adolescent and adult modus operandi. Specifically, they found
that adolescent intrafamilial offendersadopted strategies consisting of
exposing victims to pornography to gain their cooperation more fre-
quently than adolescent extrafamilial offenders. Further, in order to
gain the victim's cooperation, intrafamilial offenders adopted strate-
gies which consisted of giving gifts and making the victim feel helpless
(e.g., tell others about their sexual behavior) more frequently than
extrafamilial offenders, whereas the latter group more frequently used
alcohol and drugs strategics. This was the case for both adolescent and
adult offenders. These results show that intrafamilial offenders may
benefit from their status as a family member in that it provides them
the opportunity to command authority; thus. it makes the adoption of
particular strategies possible (e.g., tell others about their sexual
behavior) (Kaufman et al.. 1998).
2.5. Deviant sexual fantasies
The presence of deviant sexual fantasies is also a relevant factor
regarding modus operand'. Leclerc et aL (2006) found that adult
offenders with deviant sexual fantasies 48 h prior to their offense were
significantly more likely to adopt a manipulative, rather than a non-
persuasive strategy. It should be noted that adult offenders who adopted
a manipulative strategy also had more deviant sexual fantasies than
those who used a coercive strategy. This is somewhat inconsistent with
the results obtained by Carter. Kaufman, Barber, Galindo. and Mamane
(2002). Using a sample of 247 adolescent offenders, these authors
specifically studied the relationship between sexual fantasies and
violence, and found that offenders who used extreme violence were
those who reported a higher frequency of deviant sexual fantasies.
However. they also found that adolescent offenders who used violence
were more likely to report a higher frequency of sexual fantasies overall.
that is, non-deviant as well as deviant sexual fantasies. Adolescence is
characterized "by an increase in sexual drive, with a concomitant
increase in sexual interaction and experimentation... The increase of
activity and interest in sexual behaviors are normal processes of the
adolescent stage of human development" (Abel. Osborn. &TWigg.1993.
p.105). In contrast to most adult offenders,adolescents may not yet have
developed a fixed pattern of sexual arousal and interest, and generally.
low correspondence between measured arousal patterns and sexual
offending history is found (Hunter & Becker, 1994; Hunter, Goodwin &
Becker, 1994). Specifically, it suggests that the role of sexual fantasies in
adolescent sexual offenses should be interpreted more cautiously.
Links between specific types of fantasies and various modus
operandi strategies (giving drug/alcohol, desensitizing the victim to
sexual contact, giving gifts, giving/withdrawing benefits) were
recently examined (Carter. Kaufman, Estes. & Stotler-Turner, 2005). A
relationship was found, that is, between coercive sexual fantasies and
drug/alcohol use foradult offenders. However, fantasies did not predict
the preferred type of modus operandi in adolescent sexual offenses.
Overall, previous studies show the complexity of the relationship
between sexual fantasies and modus operandi. More importantly. it
indicates that other research must be conducted to allow for more
conclusive results.
3. The benefits of modus operand) studies
3d. Treatment implications of modus operandi studies
Across all modus operandi stages, offenders can adopt certain stra-
tegies that are similar to prosocial behaviors which consist of demon-
strating love, attention and appreciation towards someone. For example,
in order to gain the trust of his victims. the offender can spend much
time with them. give them a lot of attention. play with them and/or take
them places. To gain the cooperation of his victims in sexual activity, the
offender can gradually desensitize them by non-sexual touching and/or
saying loving things to them. In relapse prevention treatment these
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behaviors are important links in the offense chain which leads to re-
offending Consequently. these strategies should be investigated in
depth by therapists when assessing and treating offenders. As Kaufman
et al. (1998) state, increased information regarding specific offender
behavior patterns could help therapists emphasize these behaviors in
the assessment process, and assist offenders to recognize them so as to
prevent themselves from re-offending. Offenders could interrupt their
offense chain at an earlier, less dangerous point (Kaufman, Hilliker.
Lathrop, Daleiden. & Rudy,1996). This is consistent with Cornish's (1994)
rationale that the investigation of all stages of the crime-commission
process provides a wide range of intervention pointsat which thecrime
could be disrupted before occurring.
In relapse prevention treatment. modus operandi can also be
used as a framework to investigate obstacles that prevented
offenders from committing crimes. For example, an offender may
not be capable of obtaining time alone with a child too well
supervised by his parents or may be less able to gain the cooperation
of a child by desensitizing him to sexual contact in the absence of
pornographic materials. Therapists could identify those obstacles
(e.g_ presence of someone who might interfere, no access to
pornographic material) encountered in specific modus operandi
stages to more fully understand how these offenders were stopped
from offending and why they did so. A modus operandi framework
would provide a means to identify where the crime is more likely to
fail in order to favor the establishment of particular conditions which
could limit the risk of re-offending (e.g. not being alone with
children, not having access to pornographic materials).
Detailed information on the modus operandi of sexual offenders
against children also has implications for the treatment of child
sexual abuse victims. With this information, therapists working with
victims could have access to strategies adopted across all modus
operandi stages. This way, victims would be more able to understand
the crime-commission process of sexual offenses against children as
well as to distinguish manipulative strategies from similar behaviors
with a more prosocial intent. This would also help victims under-
stand that they were not responsible for the sexual abuse (Kaufman
et al., 1998). Further, victim information on victimization process
and/or offender's self-report detailed modus operandi could help
victim's therapists guide each victim to pinpoint particular events in
which the offender stopped from abusing him/her. This information
could provide cues on strategies that victims might be able to use to
prevent further victimization. As Berliner and Conte (1990) have
pointed out, children who have already been abused may be
particularly good candidates to benefit from information on
victimization process. These children, having been through such a
process, might be better able to use this knowledge to prevent
further victimization. Berliner and Conte (1990) have already
suggested that providing these children with a framework to better
understand offenders' behaviors may make the assimilation of the
information easier. It should be noted that because of their young age
(victims of child sexual abuse are often vulnerable children, that is.
needy and isolated children) (e.g., Elliott et aL, 1995), the responsi-
bility to prevent victimization by understanding offenders' strategies
should not rest solely on the victims but also on victims' parents.
Parents should be more able to understand offenders' strategies than
the victims and to use this information to prevent child sexual abuse
as well. In this sense, victim's parents can play an active role in the
prevention of further victimization and they could bean integral part
of the treatment of child sexual abuse victims.
3.2. Situational crime prevention implications of modus operandi studies
Because situational crime prevention is a relatively new applied
criminological model, key elements will be briefly reviewed before
discussing its implications in regards to the modus operandi adopted
by offenders in cases of child sexual abuse. Developed within an overall
rational choice framework, situational crime prevention implies that
crimecan be conceived as being theoutcomeof immediatechoices and
decisions made by the offender (Clarke, 1980). The main goal of
situational prevention is to make the offender change his mind from
committing a crime by targeting the "precriminal situation" and
reducing crime opportunities (Cusson, 1992; Cusson. Tremblay. L-
Biron, Ouimet, & Grandmaison, 1994). Situational crime prevention
consists of "opportunity-reducing measures that (1) are directed at
highly specific forms of crime, (2) involve the management, design or
manipulation of the immediate environment in as systematic and
permanent way as possible.(3) make crime more difficult and risky, or
less rewarding and excusable..." (Clarke. 1997, p. 4). More recently,
Wortley (1997, 1998. 2001) has argued that opportunity reduction is
only half of situational crime prevention and proposed (2001) a
classification of strategies and techniques for controlling situational
precipitators of crime that complement Clarke's (1997) existing
classification of opportunity-reduction strategies. Techniques aimed
at controlling precipitators of crime are directed at the motivational
side of the person-situation interaction rather than the opportunity
side (e.g., reducing permissibility by "shoplifting is stealing" signs).
Based on Wortley's work, Cornish and Clarke (2003) proposed a
revised classification of situational prevention strategies. Examples of
situational prevention techniques include the introduction of baggage
and passenger screening in airports, the installation of silent alarms in
victims' homes, the development of security-coded car radios and the
promotion of responsible drinking practices (Clarke, 1997).
Situational crime prevention also benefited from Comish's work,
which, as previously mentioned. resulted in the development of
crime-commission script model analysis (Cornish, 1994). In fact, pro-
viding a framework to investigate all stages of the crime-commission
process of particular crimes offers a way of matching situational
interventions to each of those stages (Cornish, 1994, 1998). With a
fuller range of possible intervention-points, it also becomes possible
to disrupt the perpetration of crime at an earlier point in the process
(e.g., preparation phase). Crime-commission script models also offer a
means to pinpoint particular stages in which obstacles (e.g., resistance
of the victim, presence of someone who might interfere) may be most
likely to stop the offender in his process of committing a crime. This
can provide a fuller picture of the crime-commission process as well as
a better understanding for situational prevention purposes.
Although the great importance of modus operandi information for
situational prevention purposes has been emphasized earlier in
criminology by Cornish, few researchers and clinicians working with
sexual offenders actually made suggestions as to possible situational
prevention techniques based on offenders' strategies. This is not
surprising since situational crime prevention has not been applied to
sexual offenses against children. As Wortley and Smallbone (2006)
point out, it may be because sexual offending has often been conceived
as the product of irrational and pathological individuals which guided
researchers and clinicians to focus most of their work on the
"individual" rather than on situational factors. It may be also due to
the lack of studies aimed at linking the modus operandi of sexual
offenders to other componentsof the crime, such assituational factors.
However, as suggested by recent studies (Kaufman. Mosher, Carter. &
Estes, 2006: Wortley & Smallbone, 2006), situational prevention of
sexual offenses against children is possible and provides another
means to prevent these offenses from occurring. Although speculative
at this stage, suggestions of situational prevention have been made in
regards to the modus operandi of sexual offenders against children and
related factors such as the location of the crime.
Drawing on the general situational crime prevention strategies
(Cornish & Clarke. 2003; Wortley, 2001), Wortley and Smallbone
(2006) made suggestions by concentrating on four techniques, that is,
increasing effort, increasing risk, controlling prompts, and reducing
permissibility. Increasing effort essentially means making it more
difficult for offenders to commit their crimes. Wortley and Smallbone
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& Were er ot.1 Atirezion and Violent &cheviot 14 (2009) 5-12
(2006) suggest that this may be achieved through excluding potential
offenders from places where children are located such as youth-
oriented organizations. Systematically screening employees and
volunteers to prevent individuals with previous convictions for sexual
offenses from working with children can be useful. However, given
that other studies have found that too many sexual offenders against
children do not have a previous sexual offense conviction (Leclerc
et al., 2006; Smallbone & Wortley, 2000), it could also be relevant to
screen the individual's behaviors with children, his motives as well as
his previous work experience with children (Leclerc et al.. 2005:
Sullivan & Beech, 2004). For example. Leclerc et al. (2005) found that
the modus operandi of these offenders focus on spending a lot of time
and being "overly touchy and affectionate with potential victims (see
also Sullivan & Beech, 2002). Organizations could verify if the can-
didates like to be in the company of children in a peculiar way, such as
spending all their leisure time with children, (e.g.. at break times),
instead of mingling with the other employees. To avoid mistakenly
excluding persons who are not sexual offenders. information about
candidates should be first used as warning signs for further inves-
tigation (Leclerc et al., 2005: van Dam, 2001).
A specific type of intervention strategy aimed at increasing effort is
controlling the facilitators of crime (e.g., weapons). In the case of
sexual offending against children, pornography represents a possible
strategy and a facilitator for offenders to commit their crimes (Elliott
et al..1995: Lang & Frenzel,1988; Langevin Fa Cumoe,2004; Smallbone
& Wortley, 2000). The highest percentage of sexual offenders against
children using this strategy was reported by Elliott et al. (1995), who
indicated that 21% of their sample did so. Disrupting preparation and
manipulation by a more restricted access to pornography is an
interesting avenue to control this facilitator (Cornish. 1998). Further,
because many sexual offenses against children are committed by
adolescent offenders (Barbaree. Hudson, & Seto. 1993), this strategy
would suggest that parents should themselves look into restricting
their children's access to pornography (e.g., pornographic movies or
magazines), if they are using any. This is even more important since
adolescent offenders usually abuse their own relatives (Barbaree et al.,
1993); and if pornography is available in the home, it can facilitate the
commission of the sexual offense.
Increasing risk refers to making the offender more likely to be
observed or detected when committing a crime. Wortley and
Smallbone (2006) suggest that the behavior of employees and
volunteers working with children should be supervised and that
supervision procedures governing the interaction with children should
also be considered. They pointed out that procedures forbidding an
employee/volunteer to be alone witha child (e.g.. forbid sports coaches
togo tocompetitions or on tripsalone with agroupof children)may be
appropriate as well as physical modifications of the environment (e.g.,
glass panels in the doors) to increase natural surveillance (see also
Leclerc et aL, 2005). These procedures could make offenders' modus
operandi more observable or detectable and thus. increase offenders'
risks of apprehension.
Wortley and Smallbone (2006) also suggest that parents/caregivers
can be better educated through public education programs to recognize
danger signals such as offender modus operandi used to seek oppor-
tunities to be alone with a child. Wortley and Smallbone also state that
those in charge of security in public locations, such as shopping malls,
need tobeawareofoffender modusoperandi and look out for suspicious
behavior. This latter suggestion means that more capable guardianship,
that is. individuals who are able to protect children by being aware of
offenders' modusoperandi, could also beextended to public locations in
which many opportunitiesof encountering children exist such as parks,
video arcades and playgrounds (Leclerc et al, 2006). Even if most sexual
offenses against children tend to occur in private spaces (e.g., offender's
home, victims home). public places are still common locations where
offenders can take their victims for sexual contact and they are still used
by extrafamilial offenders to target and find potential victims (Elliott
et al.. 1995; Smallbone & Wortley. 2000). To increase risks for sexual
offenders. physical modifications could also be considered in public
locations, such as shopping malls (e.g., public toilets designed where
maximum advantage of natural surveillance is possible, especially in
busy locations) (Wortley & Smallbone, 2006).
Controlling prompts involves identifying and removing situational
triggers. This technique is directed at automatic or reflex responses
(physiological or behavioral responses) to environmental conditions
(e.g., viewing erotic images produces sexual arousal) (Wortley, 2001).
For example, the observation of children in 'provocative' situations
(from the offender's perspective) may trigger offending (Wortley &
Smallbone. 2006). Young (1997) found that routine activities are
crucial in the sexual exploitation of children. After gaining the trust of
parents and having access to their child, extrafamilial offenders can
benefit from day-to-day routine child-care activities. Giving the child a
bath or tucking him into bed represents child-care activities that may
stimulate offending. Moreover, Wortley and Smallbone (2006) found
that sexual offending often occurs while the offender is engaged in
such intimate activities with the child. However. as these authors
pointed out, controlling these triggers is very difficult. They go on to
argue that parents should be careful as to whom they delegate these
intimate tasks. They also suggest that by being able to better
understand their crime-commission process during therapy, offenders
should be more likely to avoid placing themselves in such high-risk
situations.
Reducing permissibility refers to distorting moral reasoning
processes so as to permit individuals to engage in normally proscribed
behavior. It is based on the premise that "The human conscience is
highly malleable and sensitive to the physical and social context in
which behaviour is performed" (Wortley. 2001, p. 70). For instance,
based on the result that offenders frequently adopt the strategy con-
sisting of watching TV with their victim in order to obtain time alone
for sexual contact, Wortley and Smallbone (2006) suggest that this
situation could provide an opportunity to target offenders' cognitions
by messages through public education programs before the commis-
sion of the offense. Wortley and Smallbone state that these messages
could challenge cognitive distortions, such as 'I was teaching the child
about sexuality' by setting out the harm and the consequences of child
sexual abuse (see also Simon & Zgoba. 2006).
Wortley and Smallbone (2006) also suggest strategies aimed at
challenging offenders cognitions in youth-oriented organizations.
One such strategy is introducing explicit codes of conduct and induc-
tion procedures for staff that clearly mention acceptable and
unacceptable behavior. Other strategies involve providing formal
opportunities for children to make complaints if abuse occurs (or if
abuse is suspected to be in the process of being committed) and
introducing a process of regular independent inspections within these
organizations. These last two strategies might be especially valuable
alternatives if introducing explicit codes of conduct and induction
procedures are not appropriately followed by staff members.
While some situational prevention strategies have been suggested.
Kaufman et al. (2006) recently proposed a situational prevention
model to prevent sexual offending against children. This model is
adapted from the work of Clarke (1995. 1997) in situational crime
prevention and applied to child sexual abuse in which research on
offenders' modus operandi is integrated. At the heart of this model is
the "Crime Opportunity Structure" which consists of three compo-
nents, that is, victim characteristics or situation (e.g., isolated, needy
children, children lacking supervision), locations (e.g., parks, offen-
ders home, youth-oriented organizations), and the facilitators of
crime which basically refers to offender modus operandi strategies
(e.g. desensitization to sexual contact, threats, coercion). These
components interact with each other to create opportunities for
sexual offending against children. This opportunity structure is itself
influenced by factors such as lifestyle and routine activities, physical
environment and offender characteristics.
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Although new and needing further examination and testing, the
situational prevention model offers a promising approach in the
prevention of sexual offending against children. It illustrates that
offender modus operandi is related to victim characteristics and
locations, and more indirectly to other components such as lifestyle
and routine activities, physical environment, and offender character-
istics. This is of particular relevance since the modus operandi of
sexual offenders against children is usually based on manipulation
and establishing an intimate relationship with a vulnerable child who
does not quite understand what is happening when sexual contacts
are introduced in the relationship. In that sense. sexual offending
against children is more difficult to observe and detect than most
types of crime. Consequently, it renders other crime components such
as victim characteristics and locations as well as the understanding of
the dynamic interplay between those components and the modus
operandi. of extreme value to design prevention strategies. In other
words, it basically suggests that the situational prevention model and
particularly. the crime opportunity structure must be taken as a whole
if successful situational prevention techniques are to be expected.
4. Conclusion
The overall purpose of modus operandi studies has always been to
provide information to ultimately prevent sexual offenses against
children. Descriptive studies on the modus operandi of sexual offenders
against children initially showed how the behaviors adopted by offenders
to commit their crimes can be sophisticated. These studies found that
offenders adopt a variety of strategies to attain sub-goals (e,g., gaining
victims access, trust, cooperation in sexual activity, and maintaining
victims silence following the abuse), which enables them to perpetrate
theiroffense successfully.A particularly consistent finding was that many
offenders gradually desensitized their victim to physical contact before
moving to sexual touch (Berliner & Conte. 1990: Christiansen & Blake.
1990). Although these descriptive studies are of significant interest, the
modus operandi alone cannot explain the whole crime-commission
process. As a result. some studies were completed to examine the
relationships between modusoperandi and other characteristics such as
victim and situational factors. Specifically. research showed that the
modus operandi may be particularly influenced by the age and the
gender of the victim as well as the offender-victim relationship and the
presence of deviant sexual fantasies before the crime.
Modus operandi studies must be taken into account for the
prevention of sexual offending against children. Offender modus
operandi information is already used in relapse prevention treatment
to prevent recidivism. However, more detailed and specific informa-
tion is needed to better assist offenders from re-offending. Moreover.a
relatively new approach to control crime, situational crime preven-
tion, was demonstrated to be successful with a variety of crimes
(Clarke, 1997). From the model elaborated by Clarke (1995, 1997),
Kaufman et al. (2006) proposed a model which integrates offender
modus operandi information as central to understand child sexual
abuse opportunities. This model represents an innovative way to
address and perhaps reduce child sexual abuse.
More offender modus operandi research is preferable before
actually designing and applying situational prevention techniques to
child sexual abuse. Even though research on the modus operandi of
sexual offenders against children has found relationships between
modus operandi and victim characteristics more studies need to be
completed to support actual results and to clarify other relationships.
Further, several situational factors should be integrated in future
research. For example, understanding locations of sexual offenses
against children (domestic, institutional, public) has shown to be
promising for prevention initiatives (Wortley & Smallbone, 2006).
Therefore, it would be interesting to examine the relationship
between offender modus operandi and the location where the sexual
abuse takes place.
As previously mentioned, better understanding the dynamic
interplay between the various components of the crime is also
needed. The sexual offense itself, which is the sexual behaviors
adopted by the offender and the victim, is another component worthy
of attention. A rational choice approach implies that the modus ope-
randi has a purpose, that some sexual offenders are more successful in
their crimes, and that most offenders would seek to employ those
strategies that they have found to be successful in past sexual epi-
sodes. It can also be expected that those individuals who, as adoles-
cents, were quite successful in their sexual offenses, would be more
likely to re-offend in adulthood. In this sense, it also appears relevant
to conduct studies to verify if offender modus operandi determines or
tailors the sexual behaviors adopted by the offender and the victim
during sexual episodes. It follows that it would be necessary to
examine if victim characteristics and situational factors condition the
impact of offender modus operandi on sexual behaviors. For instance,
because male victims have been found to participate more in sexual
activity than female victims (Erickson. Walbeck. & Seely, 1988; Proulx,
Perreault, Ouimet, & Guay, 1999), one may examine if the impact of
offender modus operandi on sexual behaviors adopted by the offender
and the victim is mediated by the gender of the victim. The main idea
of the above suggestions is ultimately to nourish crime prevention
initiatives.
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