Individual cognitive-behavioural anger treatment for people with mild-borderline intellectual disabilities and histories of aggression: a controlled trial.
OBJECTIVE
Anger is a significant predictor and activator of violent behaviour in patients living in institutional settings. There is some evidence for the value of cognitive-behavioural treatments for anger problems with people with intellectual disabilities. In this study, a newly designed treatment targeted at anger disposition, reactivity, and control was provided to intellectually disabled offenders with aggression histories living in secure settings.


METHODS
About forty detained patients with mild-borderline intellectual disabilities and histories of serious aggression were allocated to specially modified cognitive-behavioural anger treatment (AT group) or to routine care waiting-list control (RC group) conditions.


METHODS
AT group participants received 18 sessions of individual treatment. The AT and RC groups were assessed simultaneously at 4 time points: screen, pre- and post-treatment, and at 4-month follow-up using a range of self- and staff-rated anger measures. The effectiveness of the treatment was evaluated using ANCOVA linear trend analyses of group differences on the main outcome measures.


RESULTS
The AT group's self-reported anger scores on a number of measures were significantly lower following treatment, compared with the RC wait-list condition, and these improvements were maintained at follow-up. Limited evidence for the effectiveness of treatment was provided by staffs' ratings of patient behaviour post-treatment.


CONCLUSIONS
Detained men with mild-moderate intellectual disabilities and histories of severe aggression can successfully engage in, and benefit from, an intensive individual cognitive-behavioural anger treatment that also appears to have beneficial systemic effects.
Taylor
John L
JL
Northumbria University, Newcastle upon Tyne, UK. john2.taylor@unn.ac.uk
Novaco
Raymond W
RW
Gillmer
Bruce T
BT
Robertson
Alison
A
Thorne
Ian
I
D000328:Adult; D000374:Aggression / Q000523:psychology; D000786:Anger; D003072:Cognition Disorders / Q000150:complications / Q000523:psychology*; D015928:Cognitive Behavioral Therapy; D006233:Persons with Disabilities / Q000523:psychology*; D006801:Humans; D008297:Male; D012307:Risk Factors; D016896:Treatment Outcome; D014850:Waiting Lists