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Conduct Disorder and Hyperactivity: II

A Cluster Analytic Approach to the Identification of a Behavioural Syndrome

Published online by Cambridge University Press:  29 January 2018

E. Taylor ,
B. S. Everitt ,
M. L. Rutter ,
G. Thorley ,
R. Schachar  and
H. M. Wieselberg
E. Taylor*
Affiliation:
Behavioural Science
B. S. Everitt
Affiliation:
Behavioural Science
M. L. Rutter
Affiliation:
Institute of Psychiatry, London
G. Thorley
Affiliation:
Institute of Child Health, London
R. Schachar
Affiliation:
Hospital for Sick Children, Toronto
H. M. Wieselberg
Affiliation:
Middlesex Hospital, London
*
Institute of Psychiatry, De Crespigny Park, Denmark Hill, London SE5 8AF, UK
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Abstract

The distinction between hyperactivity and conduct disorder was explored in a mixed group of 64 children referred to psychiatric clinics because of antisocial or disruptive behaviour. A semi-structured interview measure (the Parental Account of Children's Symptoms, PACS) proved to have adequate inter-rater reliability, internal consistency and factorial validity. The PACS scales of defiance and hyperactivity, and similar subscales from Conners' Teacher Rating Scale, were tested against laboratory and clinical measures of activity, attention, cognitive performance, psychosocial background and family relationships. The hyperactivity (but not the defiance) scales were associated with greater activity, younger age, poorer cognitive performance and abnormalities on a developmental neurological examination. The defiance (but not the hyperactivity) scales were associated with Impairment of family relationships and adverse social factors. It was concluded that a dimension of Inattentive, restless activity should be separated from one of antisocial, defiant conduct In children with psychiatric disorder.

Sixty boys, aged from 6 to 10 years, were studied after their referral to psychiatric clinics for antisocial or disruptive behaviour. Their scores on reliable measures of hyperactivity, defiant behaviour, emotional disorder and attention deficit were taken for the home, school and clinic settings; and subjected to two techniques of cluster analysis. Both gave a similar set of clusters, one of which had high scores on all measures of hyperactivity and attention deficit. Membership of this cluster was associated with a lower IQ, a younger age of problem onset and referral, an abnormal neurological examination, a history of developmental delay, smaller family size, poor peer relationships and a high rate of accidental injuries; and It predicted a good response to stimulant medication In a controlled trial. Other research on the classification of hyperactivity is discussed, and proposals are made for the criteria of a rather narrow definition of ‘hyperkinetic conduct disorder’.

Type
Papers
Information
The British Journal of Psychiatry , Volume 149 , Issue 6 , December 1986 , pp. 768 - 777
Copyright
Copyright © 1986 The Royal College of Psychiatrists 

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