Research Reports
Co-Morbidity
of Attention Deficit Hyperactivity Disorder (ADHD)
in Sexually
Aggressive Children and Adolescents
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The following
article is based on research conducted on a sample of sexually
assaultive children and adolescents between the ages of 6 and 17 at
the Maryland Institute in College Park, Maryland . In this sample,
which was evaluated over a five year period, 81% of the subjects were
determined to have a prior or current diagnosis of Attention Deficit
Hyperactivity Disorder (ADHD). This incidence was found to be
significantly greater than an 18% base rate diagnosis for all
children and adolescents evaluated at the same location during the
same time period, and the 5% base rate incidence of ADHD that has
been consistently reported for the general population.
Background
The existing
research on juvenile and adult sexual offenders has identified
several factors that are positively correlated with sexual aggression
and assault. These include (1) a history of sexual or other abuse to
the offender (Barnard et al., 1985; Finkelhor, 1988; Freeman-Longo,
1985; Groth, 1979; Langevin,Wright & Handy, 1989; Petrovich &
Templer, 1984; Pierce & Pierce, 1987; Seghorn et al., 1987;
Smith, 1988), (2) a history of family dysfunction (Monastersky &
Smith, 1985; Lewis et al., 1985; Smith, 1988), (3) deficits in the
offender's personality, particularly in social and interpersonal
competence (Blaske et al., 1989; Fehrenbach, et al., 1986; Figia, et
al., 1987; Groth, 1977), (4) previous exposure to pornography and/or
sexual violence (Becker & Stein, 1991; Candeon & Nutter,
1988; Carter et al., 1987; Ford & Linney, 1995; Pynoos &
Nader, 1988), and (5) the offender's use of "cognitive distortions",
i.e.. distortions in thinking and feeling that facilitate the
sexually aggressive behavior (Hayashino, et. al., 1995). While some
studies have noted the frequent presence of long-standing learning
problems in sexual offender populations (Awad & Saunders, 1991;
Lewis, et al., 1979; Pierce & Pierce, 1987; Tarter et al., 1983),
almost none has described the possible role of Attention Deficit
Hyperactivity Disorder (ADHD or ADD) in childhood sexual aggression,
and none has specifically studied this relationship. Moreover, a
recently published literature review (Hall & Barongan, 1997) of
the causes of sexual aggression actually minimizes the importance of
childhood learning problems or neurodevelopmental deficits as
contributory factors to sexual aggression. Nevertheless, children and
adolescents with ADHD are of special interest in this regard because
(a) such youngsters frequently display co&endash;morbid
antisocial-spectrum disorders (Hinshaw, 1987; Lynam, 1996), exceeding
50% in many samples (Biederman, Newcorn & Sprich, 1991), and (b)
ADHD is, by itself, a strong predictor of delinquency and conduct
disorders in adolescence and adulthood (Klein & Manuzza, 1991).
The possible role of ADHD in sexual aggression is implicated further
by a body of anecdotal, clinical information that associates ADHD in
adulthood with episodes of hypersexuality and inappropriate sexual
acting-out (Hallowell & Ratey, 1994). At the same time, Friedrich
(1994), in research with the Child Sexual Behavior Inventory, has
found that parents more frequently report "problems of interpersonal
boundaries and increased masturbation" in their children with
ADHD.
-
- ADHD: A
Neurodevelopmental Disorder
-
- Of the
three features identified as hallmarks of ADHD (impulsivity,
distractibility/attention deficits, and hyperactivity; See APA,
1994 and Connors, 1994), impulsivity is thought to be the
significant catalyst to antisocial behavior in the ADHD population
(Hinshaw et al., 1995; White, et al., 1994). Recent brain-imaging
studies (Zametkin, et al., 1990, 1993) have used positron emission
tomography (PET) to establish a clear neurobiological process in
ADHD. In these studies PET has been used to evaluate brain
metabolism in children and adults with ADHD, with a finding of
pronounced metabolic imbalance or insufficiency in crucial brain
areas of subjects diagnosed with ADHD. One prominent theory
(Barkley, 1994) states that the metabolic instability observed in
ADHD leads to a problem of "inhibitory capacity", that is, a
failure in the child's or adult's ability to inhibit behaviors,
thoughts, actions, and emotions. As Hallowell & Ratey (1994)
have described:
-
- The
social intrusiveness that is so characteristic of those who
have ADD is the inability to stop at the other's boundaries.
The failure to form intimate relationships is the inability to
pause long enough even to listen to the other person, let alone
to understand and respect the other's needs. The impulsivity,
the lack of planning, and the outbursts [of emotion]
are the inability to restrain the flow of action and feeling
(p. 282) .
-
- Children
and adolescents with ADHD are known for their tendency to act
impulsively, without considering possible outcomes or
consequences, and without weighing the needs or feelings of
others. This proclivity results in seemingly endless interpersonal
wrangles for the ADHD child, as evidenced by frequent conflicts
with family and at school. Later, in adulthood, these conflicts
will often emerge with marital partners, employers and legal
authorities.
-
-
- Theoretical
Considerations
-
- A
possible etiological pathway between ADHD and the emergence of
sexually aggressive and assaultive behaviors is intuitively
compelling for several reasons. First, many children, adolescents
and adults with ADHD and co-morbid conduct disorders share
multiple characteristics with individuals who commit sexual
aggression; these include (1) a frequent lack of interpersonal
sensitivity and empathy, more generally demonstrated by emotional
immaturity, (2) a vulnerability to chemical dependency and
addictive behavior, (3) an attraction to dangerous, high-
stimulation and high-risk behavior, (4) a tendency, in some,
toward hypersexuality, and (5) a difficulty or deficit in imposing
limits, structure and direction on their own behavior. The
presence of ADHD may also explain the occurrence of sexual
acting-out in children who have never been abused - sexually or
otherwise - and have not been exposed to sexual violence or severe
family dysfunction. ADHD, when coupled with exposure to sexual
stimulation, may be sufficient to evoke an imitative response that
results in sexual aggression and misconduct in young children.
Youngsters with ADHD are well-known for impulsively reenacting
dangerous and highly stimulating behavior that they have observed
elsewhere. Although impulsivity may be instrumental to a child's
initial forays into sexual misconduct, particularly when other
traumatic influences are absent, it is not likely to be the factor
that propels this sexual behavior into a lifelong, adulthood
pattern. In fact, impulsivity may be a key variable in
differentiating episodic, thoughtless acting-out from calculated,
remorseless psychopathy (Hinshaw, 1994). This formulation also is
consistent with Groth's (1982) original distinction between
chronic, "fixated" pedophiles (who are known to carefully plan
their offenses and "groom" their victims) and the more episodic,
"regressed" offender, who seems more often to be driven by
thoughtless or unconscious impulses. What may be necessary for
impulsive episodes to develop into chronic patterns of planned
behavior is the co-morbid presence of interpersonal and social
deficits, referred to by some as a deficit in "emotional
intelligence" (Goleman, 1995). If a child or adolescent is
severely lacking in interpersonal and emotional
understanding
and skills, it is unlikely that more appropriate and mature forms
of sexual expression will be developed. Instead, it may be more
likely that existing forms of sexual expression - however
primitive or maladaptive - will become fixed. It is therefore also
useful to note the well-established finding that some children
with ADHD also have major deficits in social skills and in
processing social information (Moffett, 1990; Milrich & Dodge,
1984). It is certainly reasonable that such deficits, if not
ameliorated, could contribute to lifelong problems with sexual
intimacy and healthy sexual expression. In fact, the presence of
cognitive deficits associated with the processing of social and
emotional information may be instrumental to the creation of
"cognitive distortions" that maintain a chronic pattern of sexual
misconduct. Hence, children with ADHD, by virtue of their
impulsivity, may be more vulnerable to reenacting inappropriate
sexual behavior during childhood and adolescence, and may be more
likely to continue this antisocial behavior into adulthood when
they also lack the cognitive skills essential to their social and
emotional development. In fact, this paradigm is particularly
congruent with existing research which has shown that children
with both ADHD and verbal learning disabilities/ social skill
deficits present a more serious risk for sustaining their
antisocial behavior through adolescence and into adulthood
(Moffett, 1990).
-
-
- Implications
for Evaluation and Treatment
-
- Because
sexually aggressive and assaultive behavior in children and
adolescents may be symptomatic of a more fundamental
attention-deficit hyperactivity disorder, it may be essential that
clinical evaluations of child and adolescent sexual offenders also
include screenings for ADHD. Presently, many professionals who
perform offender evaluations are not trained in the evaluation and
treatment of ADHD, and may lack an understanding of the disorder's
potential contribution to the child's sexual aggression, as well
as its' implications for the child's long-term adjustment and
predisposition to antisocial behavior. Without adequate
evaluation, a significant component of these children's'
behavioral difficulties could go undetected, resulting in
insufficient treatment and enhanced risk of continued anti-social
behavior.
-
- When ADHD
is detected in sexually aggressive children, it is imperative that
it be treated clinically, using the same comprehensive strategies
that are indicated for attention-deficit disorders in general.
These strategies generally include (1) various school
interventions, (2) parent education and training, (3) individual
and/or group counseling for the child, (4) cognitive training
strategies, and (5) medication, most commonly a CNS stimulant,
antidepressant, or other mood stabilizer. Education and counseling
for the child and family are typically included in offender
treatment, as is some type of cognitive retraining. These
interventions can be easily supplemented to include information
and counseling related to ADHD. Also, it may be important for
clinicians to recognize ADHD's potentially profound effect on
academic performance, and its subsequent influence on long-term
social and emotional adjustment. These effects may require
clinicians to act as advocates at school and with teachers, to
ensure that the child receives all of the academic services and
supports that are appropriate and necessary for the child's
success. Finally, the important role of medication must not be
overlooked. Although considerable misinformation and
misunderstanding about drug treatment for ADHD persistently
appears in the media, a sizable body of research (see for example
Hinshaw, et al., 1989) has demonstrated the significant positive
effects of stimulant medication on multiple target symptoms of
ADHD, including aggressive behavior. Hence, it is also important
for clinicians to be familiar with the various pharmaceutical
treatments for ADHD and to be able to consult with pediatricians
and
psychiatric
physicians concerning the sexually aggressive child's medication
needs. In short, it may become essential for clinicians to broaden
their assessment and treatment repertoire so they can provide
truly comprehensive and effective services for sexually aggressive
and assaultive children and their families.
-
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