| Birth Name: | Gísli Hannes Guðjónsson |
| Birth Date: | 26 October 1947 |
| Birth Place: | Reykjavík, Iceland |
| Honorific Suffix: | CBE[1] |
| Nationality: | Icelandic |
| Occupation: | Academic, professor |
| Education: | Brunel University London University of Surrey |
| Known: | Authority on suggestibility and false confessions |
Gísli Hannes Guðjónsson, CBE (born 26 October 1947) is an Icelandic-British academic, educator, forensic psychologist and former detective.[2] He is Emeritus Professor at the Institute of Psychiatry of King's College London and a Professor in the Psychology Department at Reykjavik University.[3] Gísli is an internationally renowned authority on suggestibility and false confessions and is one of the world's leading experts on false memory syndrome.
Gísli was born on 26 October 1947 to Guðjón Aðalsteinn Guðmundsson and Þóra Hannesdóttir.[4] His twin brother joined the Reykjavík Criminal Investigation Police while he chose to study economics at Brunel University London (BSc, 1975), but changed to psychology whilst in his second year.[5] [6] He completed his studies at the University of Surrey (MSc, 1977; PhD, 1981).[7] In 1982, together with MacKeith he coined the term memory distrust syndrome, to describe those who distrust their own memories and are motivated to rely on external (non-self) sources to verify the accuracy of memories.[8]
In the 1990s he worked as head of forensic psychology services and clinical psychologist to the Bethlem Royal Hospital and Maudsley Hospital.[9]
He was appointed Commander of the Order of the British Empire (CBE) in the 2011 Birthday Honours for services to clinical psychology.[10]
Gísli's expert testimony was the basis for the convictions of the Birmingham Six and Guildford Four being overturned.[11] He created the Gudjonsson suggestibility scale to measure how susceptible someone is to coercion during an interrogation. An author of several books, Gudjonsson was a coauthor on the American Psychology-Law Society (AP-LS) White Paper by Saul Kassin et al. (2010) titled "Police-induced confessions: Risk factors and recommendations."[12]