Introduction to anger management and the study

Anger management programmes are commonly used in rehabilitative settings, such as with offenders, to prevent violent behaviour.

Aims of the study

The study had two main objectives, which guided its design and focus on practical outcomes for offender rehabilitation.

Key aims:

• To assess programme effectiveness - The researchers wanted to determine if anger management programmes produce greater changes in anger-related behaviours and knowledge than no treatment at all.
• To identify predictors of improvement - They aimed to explore whether pre-treatment factors, such as an offender's readiness and motivation to participate, could forecast who would benefit most from the programme.

Participants in the study

Details of participants:

• Sample size and demographics - The study involved 418 male offenders with an average age of 28.8 years. These were drawn from referrals to anger management programmes in prison and community correction facilities in South Australia and Western Australia.
• Completion rates - Out of the initial 418, 285 completed assessments immediately after the intervention, 78 completed a two-month follow-up (mostly from prison-based programmes, at 93%), and only 21 completed the six-month follow-up.
• Group allocation - Participants were not randomly assigned; the intervention group consisted of those starting the programme, while the control group was made up of offenders from the same pool who were on a waiting list for the programme.

Method and procedure

This study used a quasi-experimental design, which compares groups without random assignment, to evaluate the programme's impact.

Research method:

• Quasi-experimental approach - The study compared an intervention group (receiving anger management) with a control group (on a waiting list, receiving no treatment). Effectiveness was measured by changes in key variables before and after the programme.
• Measures used - Participants completed assessments on key outcome variables. These were taken pre-treatment, post-treatment, and at follow-ups to track changes over time.

Procedure:

1. Selection and grouping - Offenders were referred to programmes and divided into intervention (starting immediately) and control (waiting list) groups.
2. Intervention delivery - The intervention group attended a cognitive behavioural programme, which included exercises on cognitive restructuring, assertion training, and relapse prevention.
3. Programme structure - Sessions ran for ten two-hour meetings.
4. Assessments - The intervention group was assessed immediately before and after the programme, then at two and six months later. The control group was assessed before and after the programme.
5. Evaluation - Changes were compared between groups on key outcome variables.

Results of the study

Key results:

• Overall improvement trends - The intervention group showed some progress compared to the control group, but these differences were not statistically significant, meaning they could have occurred by chance and do not provide strong evidence of the programme's consistent effectiveness.
• Specific improvements - Participants in the anger management programme demonstrated significantly greater gains in anger knowledge than the control group.
• Influence of readiness - Offenders who were motivated and ready to engage showed more improvements across various anger measures, while those with low motivation exhibited little or no change.

Conclusions and implications

Main conclusions:

• Role of readiness - The study concluded that an offender's motivation and preparedness to address anger issues are crucial predictors of success. Motivated participants benefited more.
• Limited evidence for overall effectiveness - While there were gains in knowledge, the lack of statistically significant broader improvements means the programme cannot be definitively proven more effective than no treatment based on this study.