The Gudjonsson Suggestibility Scale (GSS) is a tool used to assess the reliability of a suspect's statements during an interrogation. It was developed by Icelandic psychologist Gisli Gudjonsson in the 1980s, and has since been widely used in criminal investigations around the world.
The GSS is designed to measure a suspect's susceptibility to suggestion, and to determine whether their statements are likely to be accurate or influenced by external factors. The test involves a series of tasks, such as recalling a list of words or identifying the source of a statement, which are designed to elicit false information or test the suspect's susceptibility to suggestion.
The GSS is based on the idea that some people are more susceptible to suggestion than others, and that this susceptibility can be measured and used to assess the accuracy of their statements. However, it is important to note that the results of the GSS should not be used as the sole basis for determining the reliability of a suspect's statements, and should be considered in conjunction with other factors, such as the evidence and the suspect's behavior during the interrogation.
Overall, the GSS is a useful tool for assessing the reliability of a suspect's statements, but it should be used with caution and in conjunction with other investigative techniques.