There is a need for a larger multi-site trial of treatment with a broad set of measures and the ability to analyse who benefits from such treatments and who does not.

Valuable insights into the aspects of treatment that group members found useful were explored. Such insights are often not captured by studies that assess the efficacy of treatment models using treatment-specific measures only, and these are important in defining the quality of services provided.

Background For non-disabled men, group cognitive-behaviour therapy is a successful

No abstract

Researching sensitive topics, such as the treatment of men with intellectual disabilities and sexually abusive behaviour, present a number of ethical issues for researchers. This paper describes our experiences in working with Multi-Centre Research Ethics Committees on a research proposal designed to assess the ef®cacy of cognitive behaviour therapy for men with intellectual disabilities who are at risk of sexual offending. After submitting to three Multi-Centre Research Ethics Committees and spending a year trying to get ethical approval, we questioned whether:the issue of study design should be part of the Multi-