Gísli H. Guðjónsson

Gísli Hannes Guðjónsson (født 26. oktober 1947) er en britisk-islandsk professor í rettspsykologi ved Institute of Psychiatry ved King's College London.
Guðjónsson er særlig kjent for sitt arbeid og forskning på avhørsmetoder for unngå feil avgjørelser i rettssystemet (justisfeil), spesielt på virkningen av ledende spørsmål og de fysiske og psykiske forhold ved utspørring både av mistenkte, vitner og sakkyndige. I den forbindelse er han kjent for å ha utviklet Gudjonsson suggestibility scale (GSS), som er en test som avslører hvor lett påvirkelig en person er i en avhørssituasjon.
Han har også forsket på femomenet falske tilståelser, og i 1982 beskrev han fenomenet memory distrust syndrome (MDS).
Guðjónsson har hyppige gjesteforelesninger ved ulike universitet over hele verden.
Guðjónsson har alene, og sammen med andre (særlig professor Jón F. Sigurðsson), gitt ut en rekke bøker og forskningsrapporter.


== Utdannelse ==
1975 Brunel University, B.Sc Social Sciences (First Class Honours – prize awarded for performance in the examination)
1977 University of Surrey, M.Sc Clinical Psychology
1981 University of Surrey, Ph.D. (part-time over 3 years with a full-time clinical psychology post)


== Tillitsverv og æresverv ==
1984-1989 – Honorary Principal Clinical Psychologist to the Maudsley and Bethlem Royal Hospital
1990-Present – Honorary Top (B) Grade Clinical Psychologist to the Maudsley and Bethlem Royal Hospital
1996 – Associate Editor-in-chief, Journal of Personality and Individual Differences
1997-2005 – Co-Editor-in-chief, Journal of Personality and Individual Differences
1989-1990 – Deputy Chairman, Board of Studies in Psychology, University of London
1991-1992 – Chairman, Board of Studies in Psychology, University of London
1992-1995 – Head of the Adult National Clinical Psychology Services
1996-Present – Head of Forensic Psychology Services at The Maudsley Hospital (Southwark)
1997-2000 – External Examiner, University of Surrey
1998 – Fellow of the British Psychological Society
1991-1999 – Magistrate (Croydon Magistrates Court)
2001 – Honorary Doctorate in Medicine, University of Iceland


== Et utvalg publikasjoner ==
Gísli H. Guðjónsson og Jón F. Sigurðsson (1994). How frequently do false confessions occur? An empirical study among prison inmates. Psychology, Crime and Law, 1, 21-26.
Jón F. Sigurðsson og Gísli H. Guðjónsson (1994). Alcohol and drug intoxication during police interrogation and the reasons why suspects confess to the police. Addiction, 89, 985-997.
Jón F. Sigurðsson og Gísli H. Guðjónsson (1995). Personality characteristics of drug-dependent offenders. Nordic Journal of Psychiatry, 49, 33-38.
Gísli H. Guðjónsson og Jón F. Sigurðsson (1995). The relationship of confabulation to the memory, intelligence, suggestibility and personality of juvenile offenders. Nordic Journal of Psychiatry, 49, 373-378.
Gísli H. Guðjónsson og Jón F. Sigurðsson (1996). The relationship of confabulation to the memory, intelligence, suggestibility and personality of prison inmates. Applied Cognitive Psychology, 10, 85-92.

Jón F. Sigurðsson og Gísli H. Guðjónsson (1996). Psychological characteristics of juvenile alcohol and drug users. Journal of Adolesence, 19, 41-46.
Jón F. Sigurðsson og Gísli H. Guðjónsson (1996). The psychological characteristics of ‘false confessors’. A study among Icelandic prison inmates and juvenile offenders. Personality and Individual Differences, 20, 321-329.
Jón F. Sigurðsson og Gísli H. Guðjónsson (1996). Illicit drug use among Icelandic prisoners prior to their imprisonment. Criminal Behaviour and Mental Health, 6, 98-104.
Jón F. Sigurðsson og Gísli H. Guðjónsson (1996). Illicit drug use among “false confessors”: A study among Icelandic prison inmates. Nordic Journal of Psychiatry, 50, 325-328.
Jón F. Sigurðsson og Gísli H. Guðjónsson (1996). The relationship between types of claimed false confession made and the reasons why suspects confess to the police according to the Gudjonsson Confession Questionnaire (GCQ). Legal and Criminological Psychology, 1, 259-269.
Jón F. Sigurðsson og Gísli H. Guðjónsson (1997). The criminal history of ‘false confessors’ and other prison inmates. The Journal of Forensic Psychiatry, 8, 447-455.
Gísli H. Guðjónsson og Jón Friðrik Sigurðsson (1999). The Gudjonsson Confession Questionnaire-Revised (GCQ-R): factor structure and its relationship with personality. Personality and Individual Differences, 27, 953-968.
Gísli H. Guðjónsson og Jón Friðrik Sigurðsson (2000). Differences and simillarities between violent offenders and sex offenders. Child Abuse & Neglect, 24, 363-372.
Marius Peersen, Gísli H. Guðjónsson og Jón Friðrik Sigurðsson (2000). The relationship between general and specific attribution of blame for a “serious” act ant the role of personality. Nordic Journal of Psychiatry, 54, 25-30.
Jón Friðrik Sigurðsson, Gísli H. Guðjónsson og Marius Peersen (2001). Differences in the cognitive ability and personality of desisters and re-offenders: A prospective study among young offenders. Psychology, Crime and Law, 7, 33-43.
Jón Friðrik Sigurðsson og Gísli H. Guðjónsson (2001). False confessions: The relative importance of psychological, criminological and substance abuse variables. Psychology, Crime and Law, 7, 275-289.

Gísli H. Guðjónsson, Jón Friðrik Sigurðsson, Berglind Brynjólfsdóttir, og Hrafnhildur Hreinsdóttir (2002). The relationship of compliance with anxiety, self-esteem, paranoid thinking and anger. Psychology, Crime and Law, 8,145-153.

Gísli H. Guðjónsson og Jón Friðrik Sigurðsson (2003). The relationship of compliance with coping strategies and self-esteem. European Journal of Psychological Assessment, 19, 117-123.
Gísli H. Guðjónsson, Jón Friðrik Sigurðsson, Ólafur Ö. Bragason, Emil Einarsson og Eva B. Valdimarsdóttir (2004). Confessions and denials and the relationship with personality. Legal and Criminological Psychology, 9, 121-133.
Jón Friðrik Sigurðsson og Gísli H. Guðjónsson (2004). Forensic Psychology in Iceland. A survey of members of the Icelandic Psychological Society. Scandinavian Journal of Psychology, 45, 325-329.
Gísli H. Guðjónsson og Jón Friðrik Sigurðsson (2004). Motivation for offending and personality. Legal and Criminological Psychology, 9, 69-81.
Gísli H. Guðjónsson, Kristín Hannesdóttir, Tómas Ágústsson, Jón Friðrik Sigurðsson, Ása Guðmundsdóttir, Þuríður Þórðardóttir, Þórarinn Tyrfingsson og Hannes Pétursson (2004). The relationship of alcohol withdrawal symptoms to suggestibility and compliance. Psychology, Crime and Law, 10, 169-177.

Gísli H. Guðjónsson, Kristín Hannesdóttir, Tómas Ágústsson, Jón Friðrik Sigurðsson, Ása Guðmundsdóttir, Þuríður Þórðardóttir, Þórarinn Tyrfingsson og Hannes Pétursson (2004). Personality predictors of the failure of alcoholics to come for follow-up assessment. Personality and Individual Differences, 37, 805-813.
Marius Peersen, Jón Friðrik Sigurðsson, Gísli H. Guðjónsson og Sigurður J. Grétarsson (2004). Predicting re-offending: A five-year prospective study of Icelandic prison inmates. Psychology, Crime and Law, 10, 197-204.
Gísli H. Guðjónsson, Jón Friðrik Sigurðsson og Emil Einarsson (2004). Role of personality in relation to confessions and denials. Psychology, Crime and Law, 10, 125-135.
Gísli H. Guðjónsson og Jón Friðrik Sigurðsson (2004). The relationship of suggestibility and compliance with self-deception and other-deception. Psychology, Crime and Law, 10, 447-453.

Gísli H. Guðjónsson, Jón Friðrik Sigurðsson, Ólafur Ö. Bragason, Emil Einarsson og Eva B. Valdimarsdóttir (2004). Compliance and personality. The vulnerability of the unstable-introvert. European Journal of Personality, 18, 435-443.

Gísli H. Guðjónsson, Emil Einarsson, Ólafur Ö. Bragason og Jón Friðrik Sigurðsson (2006). Personality predictors of self-reported offending in Icelandic students. Psychology, Crime and Law

Gísli H. Guðjónsson, Jón Friðrik Sigurðsson, Hildur Finnbogadóttir og Unnur Jakobsdóttir Smári. Perceived parental rearing practices and false confessions. Scandinavian Journal of psychology.
Jón Friðrik Sigurðsson, Gísli H. Guðjónsson, Emil Einarsson og Gudmundur Gudjonsson (2006). Differences in personality and mental state between suspects and witnesses immediately after being interviewed by the police. Psychology, Crime and Law.
Gísli H. Guðjónsson, Jón Friðrik Sigurðsson, Bryndís Björk Ásgeirsdóttir og Inga Dóra Sigfusdottir (2006). Custodial interrogation, false confession and individual differences. A national study among Icelandic youth. Personality and Individual Differences.


== Eksterne lenker ==
- Faktaside Gisli H. Gudjonsson
En ærlig sak Artikkel om Guðjónssons rolle i Birgitte-saken, Magasinet Plot