Gerard O'Brien

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This paper reports the prevalence of situational and pervasive hyperactivity using different definitions of 'caseness', and explores the relationship between situational and pervasive hyperactivity and conduct disorder, using a large data base from the North of England. The prevalence of hyperactivity, and its relationship with conduct disorder, varied(More)
The reliability of DSM-III anxiety disorder diagnoses was determined using a new structured interview, the Anxiety Disorders Interview Schedule (ADIS). Two interviewers examined 60 consecutive outpatients at an anxiety disorders clinic and assigned primary and secondary diagnoses based on the ADIS. The kappa statistic, calculated on the basis of perfect(More)
Although connectionism is advocated by its proponents as an alternative to the classical computational theory of mind, doubts persist about its computational credentials. Our aim is to dispel these doubts by explaining how connectionist networks compute. We first develop a generic account of computation-no easy task, because computation, like almost every(More)
Twenty-nine insomniacs underwent four consecutive sleep laboratory evaluations before and after receiving tension-release relaxation training, no-tension-release relaxation training, or no-treatment. On the basis of the discrepancy between subjective and EEG-defined measures of latency to sleep onset, subjects were classified as pseudoinsomniacs or(More)
Reformers urge that representation no longer earns its explanatory keep in cognitive science, and that it is time to discard this troublesome concept. In contrast, we hold that without representation cognitive science is utterly bereft of tools for explaining natural intelligence. In order to defend the latter position, we focus on the explanatory role of(More)
We have compared two methods of reducing hypotension during spinal anaesthesia in elderly patients, 6% hetastarch and crystalloid or methoxamine 10 mg i.m., in terms of haemodynamic stability and requirements for additional vasopressors. Sixty-two patients (aged 60-97 yr) undergoing surgical fixation of fractured neck of femur were allocated randomly to(More)
A study of deviant eating behaviour among mentally handicapped adults in community placements is reported. Those individuals with a psychiatric disorder showed more deviant eating behaviour. Depressed subjects, in particular, showed an excess of the amount eaten and time spent searching for food, as well as the tendency to eat all sweet food presented to(More)