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Dialectical behaviour therapy (DBT) (Linehan, 1993) is a comprehensive psychological treatment that was first developed for suicidal individuals with a diagnosis of borderline personality disorder. The model has successfully been used to address violence and aggression in a forensic setting (Evershed et al, 2003). The National High Secure Learning Disability Service (NHSLDS) piloted an adapted DBT programme suitable for men with mild learning/intellectual disabilities in 2004, and the programme has been developed over a period of six years. This paper describes the rationale for development of the programme, how the programme has evolved, the major modifications to mainstream DBT that it incorporates, and the challenges that remain.

The purpose of this paper is to provide a routine evaluation of clinical effectiveness of an adapted DBT informed skills programme (“I Can Feel Good”; Ingamells and Morrissey, 2014), run on both male and female intellectual disability wards of a medium security psychiatric hospital.

A pre–post evaluation study of routine clinical practice was undertaken utilising staff report scales collected as the primary source of evaluation.

Findings show a positive shift regarding each module for both gender groups. Due to observed baseline differences between gender groups, data were separated and analysed separately. Non-parametric statistical analysis demonstrates statistically significant improvement across three modules for the male sample (managing feelings, coping in crisis and people skills) and two modules for the female sample (managing feelings and people skills).

There appears to be subtle outcome differences regarding this programme for both gender groups across modules. Potential reasons for this are discussed, along with clinical reflections regarding gender differences and adaptations. Reflections upon future revisions including the integration of the new DBT skills (Linehan, 2014) are made in light of these findings.