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Aggression Among Children with ADHD, Anxiety, or Co-occurring Symptoms: Competing Exacerbation and Attenuation Hypotheses

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Abstract

Competing hypotheses for explaining the role of anxiety in the relation between attention-deficit/hyperactivity disorder (ADHD) symptoms and childhood aggression were evaluated. Two studies tested whether anxiety exacerbated, attenuated, or had no effect on the relation between ADHD and aggression subtypes among psychiatrically hospitalized children. In Study 1 (N = 99), children who scored above clinical cut-off levels for anxiety only, ADHD only, and co-occurring ADHD and anxiety were compared on aggression subtypes (i.e., reactive, proactive, overt, and relational aggression). In Study 2, the moderating role of anxiety on the relation between ADHD and aggression subtypes was examined with a larger sample (N = 265) and with continuous variables. No support was found for either the attenuation or exacerbation hypothesis, and results remained consistent when separately examining hyperactivity/impulsivity and inattention symptoms of ADHD. Although ADHD symptoms were significantly associated with all aggression subtypes, this association did not remain when including symptoms of oppositional defiant disorder.

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Notes

  1. Although unavailable for the full sample, parent-reported DSM-IV diagnoses were available for 79 of the children using the Diagnostic Interview Schedule for Children (DISC-IV). Of particular interest given the use of psychiatrically hospitalized children in the present studies is the potential for elevated rates of bipolar disorder and posttraumatic stress disorder (PTSD) that may cloud our examination of ADHD and anxiety given symptom overlap. Among the children for whom DISC diagnoses were available, few met criteria for either mania or PTSD. Specifically, 1 child met criteria for mania and 6 children met criteria for PTSD. These children were retained in the study analyses since DISC diagnoses were not available for the full sample and thus could not be used consistently as an exclusionary criterion across all participating children.

  2. When ADHD-Inattentive and ADHD-Hyperactive/Impulsive symptoms were examined simultaneously, ADHD-Hyperactive/Impulsive symptoms significantly predicted all aggression outcomes above and beyond ADHD-Inattentive symptoms. ADHD-Inattentive symptoms no longer predicted any aggression outcome above and beyond ADHD-Hyperactive/Impulsive symptoms.

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Correspondence to Stephen P. Becker.

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Portions of this paper were presented at the 83rd Annual Meeting of the Midwestern Psychological Association, Chicago, Illinois (May, 2011). The authors thank the families who participated in these studies, as well as comments by Joshua Langberg on an earlier draft of this article.

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Becker, S.P., Luebbe, A.M., Stoppelbein, L. et al. Aggression Among Children with ADHD, Anxiety, or Co-occurring Symptoms: Competing Exacerbation and Attenuation Hypotheses. J Abnorm Child Psychol 40, 527–542 (2012). https://doi.org/10.1007/s10802-011-9590-7

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