Abnormal psychosocial factors, assessed both clinically and by raters blind
to clinical presentation, were examined in 21 hyperkinetic and 26 conduct
disordered children. Blind raters found the frequency of psychosocial adver
sities to be similar in the two disorders. By contrast the clinical rater,
who did know the diagnosis of patients, rated adverse psychosocial situatio
ns as much lower in hyperkinetic children than in children with conduct dis
order. Logistic regression showed, particularly in the category of abnormal
intrafamilial relationships (Lack of warmth in parent child relationship,
Hostility or scapegoating of the child, Intrafamilial discord among adults)
, effects of the interaction between rater and knowledge of diagnosis. Clin
ical raters should be aware of abnormal psychosocial situations in hyperkin
etic children and assess possible adverse effects on parents and children.
Researchers should be aware of a possible bias in research interviews.