Peter is currently a National Institute for Health Research (NIHR) Research Fellow and is working on projects that aim to investigate psychological factors associated with criminal offending behaviour by people with intellectual and other developmental disabilities.  Other funded projects include a randomised control trial of group cognitive behavioural therapy for people with Asperger Syndrome and high functioning autism who also have problems with anxiety (PAsSA Trial). He is also developing and evaluating criminal justice liaison and diversion services for people with intellectual and other developmental disabilities within the county of Norfolk with funding from the Department of Health.  He is a Honorary Consultant Clinical and Forensic Psychologist, working at the Broadland Clinic, HPFT-Norfolk.

Peter completed his undergraduate degree at Memorial University of Newfoundland, Canada.  He completed postgraduate training in clinical psychology at the Institute of Psychiatry, King's College, London as a Lord Rothermere Fellow.  He completed his PhD at the Tizard Centre, University of Kent as an NIHR Research Fellow.  He was awarded another NIHR fellowship which runs from 2012 to 2016.  He is a registered Clinical and Forensic Psychologist.

Educational and Professional Qualifications 

• BSc (Hons) (Memorial)
• DClinPsy (London)
• PhD (Kent)
• AFBPsS 
• CPsychol
• CSci

Broadland Clinic
Hertfordshire Partnership NHS Foundation Trust - Norfolk
Little Plumstead
Norwich
NR13 5EW
 

• Intellectual and developmental disabilities
• Impact of staff-patient relationships on treatment outcome 
• Attribution theory
• Expressed emotion
• Forensic issues with people who have intellectual and developmental disabilities
• Psychological therapies with people who have intellectual and developmental disabilities 

Recent Grants

Recent Publications

Bonfield, S., Collins, S. & Guishard-Pine, J., &  Langdon, P.E (2010).  The relationship between mental health literacy and help seeking amongst foster carers.  British Journal of Social Work, 40, 1335-1352.

Bruce, M., Collins, S., Langdon, P.E., Powlitch, S., & Reynolds, S. (2010). Does training improve understanding of core concepts in cognitive behaviour therapy by people with intellectual disabilities?  A randomised experiment. British Journal of Clinical Psychology, 49, 1-13.

Mansour, K., Roshdy, E., Langdon, P.E., Daoud, O.A., El-Saadawy, M., Al-Zahrani, A., & Khashaba, A. (2010). Child abuse and its long-term consequences: An exploratory study on Egyptian university students. The Arab Journal of Psychiatry, 21, 137-163.

Langdon, P.E., Murphy, G.H., Clare, I.C.H, & Palmer, E.J. (2010). The psychometric properties of the Sociomoral Reflection Measure-Short Form and the Moral Theme Inventory for men with and without intellectual disabilities.  Research in Developmental Disabilities, 31, 1204-1215.

Langdon, P.E., Murphy, G.H., Clare, I.C.H., Steverson, T., & Palmer, E.J. (2011) The relationships between moral reasoning, empathy and distorted cognitions amongst men with intellectual disabilities and a history of criminal offending. American Journal on Intellectual and Developmental Disabilities, 116, 438-456.

Langdon, P.E., Clare, I.C.H., & Murphy G.H. (2010). Developing an understanding of the literature relating to the moral development of people with intellectual disabilities.   Developmental Review, 30, 273-293.

Langdon, P.E., Clare, I.C.H., & Murphy G.H. (2010). Measuring social desirability amongst people with intellectual disabilities: the psychometric properties of the Self- and Other-Deception Questionnaire-Intellectual Disabilities.  Research in Developmental Disabilities, 31, 1601-1608.

Langdon, P.E., Clare, I.C.H., & Murphy, G.H. (2011).  Moral reasoning theory and illegal behaviour by adults with intellectual disabilities.  Psychology, Crime and Law, 17, 101-115.

Langdon, P.E., Murphy, G.H., Clare, I.C.H, Palmer, E.J. & Rees, J. (In Press). An evaluation of the EQUIP treatment programme with men who have intellectual or other developmental disabilities. Journal of Applied Research in Intellectual Disabilities.

Sex Offender Treatment Services Collaborative- Intellectual Disabilities (SOTSEC-ID). (2010). Effectiveness of group cognitive behavioural treatment for men with intellectual disabilities at risk of sexual offending. Journal of Applied Research in Intellectual Disabilities, 23, 537-551.

Current teaching is mainly on the Doctorate in Clinical Psychology programme.  I supervise ClinPsyD, PhD, MD and other postgraduate students.