A pilot evaluation of a randomised controlled trial (RCT) of Enhanced Thinking Skills versus Treatment as Usual in antisocial personality disordered offenders in the community

ISRCTN	ISRCTN72372295
DOI	https://doi.org/10.1186/ISRCTN72372295
Protocol serial number	N/A
Sponsor	University of Manchester (UK)
Funder	National Forensic Mental Health R&D Programme

Prospectively registered

Protocol

Statistical analysis plan

Results

Individual participant data

Record updated in last year

Plain English summary of protocol

Not provided at time of registration

Dr Mairead Dolan
Scientific

Research Department
Edenfield Centre
Bury New Road
Manchester
M25 3BL
United Kingdom

Phone	+44 (0)161 772 3619
Email	abc@email.com

Primary study design	Interventional
Study design	Randomised controlled trial
Secondary study design	Randomised controlled trial
Study type	Participant information sheet
Scientific title	A pilot evaluation of a randomised controlled trial (RCT) of Enhanced Thinking Skills versus Treatment as Usual in antisocial personality disordered offenders in the community
Study objectives	In community-based antisocial personality disordered offenders who are in contact with forensic/other NHS services or criminal justice (probation), Enhanced Thinking Skills (ETS) will lead to a reduction in criminal attitudes, improvements in problem solving ability, a reduction of risk scores on dynamic measures of risk and a reduction in antisocial and offending behaviour compared with Treatment As Usual (TAU).
Ethics approval(s)	Not provided at time of registration
Health condition(s) or problem(s) studied	Antisocial Personality Disorder
Intervention	Enhanced Thinking Skills Cognitive Training versus Treatment as Usual
Intervention type	Behavioural
Primary outcome measure(s)	Number of criminal offences during follow-up, change in antisocial personality traits, change in antisocial attitudes, change in measures of risk.
Key secondary outcome measure(s)	Participants engagement in and satisfaction with the Enhanced Thinking Skills Therapy
Completion date	30/06/2008

Participant type(s)	Patient
Age group	Adult
Lower age limit	18 Years
Upper age limit	50 Years
Sex	All
Target sample size at registration	180
Key inclusion criteria	1. Male and female participants meeting the criteria for Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV) antisocial personality disorder with a history of offending behaviour 2. Aged 18-50 years 3. Participants will be recruited from the NHS and Greater Manchester Probation Service 4. Participants will have a history of antisocial behaviour and/or offending behaviour particularly violent offences
Key exclusion criteria	1. Current Axis I disorder (schizophrenia, depression, anxiety disorders) (Schedule Clinical Interview for DSM-IV Axis I disorder, First et al, 1996) 2. IQ less than 70 on the National Adult Reading Test (Nelson et al, 1978) 3. Previously undergone a cognitive skills intervention
Date of first enrolment	01/01/2006
Date of final enrolment	30/06/2008

Research Department

Manchester
M25 3BL
United Kingdom

Individual participant data (IPD) Intention to share	No
IPD sharing plan summary	Not provided at time of registration
IPD sharing plan

Output type	Details	Date created	Date added	Peer reviewed?	Patient-facing?
Participant information sheet	Participant information sheet	11/11/2025	11/11/2025	No	Yes