Collada‐Castillo 2011.

Methods	Randomised controlled trial Study conducted in the USA
Participants	36 participants with intellectual disability and aggressive behaviour
Interventions	Two intervention arms: group based cognitive re‐appraisal and group based problem solving; and one control arm Participants were randomly assigned to one of the three arms
Outcomes	Participants' ability to understand the intentions of others; ability to generate assertive / effective problem solving strategies and to regulate anger
Notes