Gudjonsson Suggestibility Scales

The Gudjonsson Suggestibility Scales (GSS 1 and GSS 2) are clinical instruments designed to assess levels of interrogative suggestibility. The scales provide a total score for suggestibility based on responses to leading questions and negative feedback. They also provide measures of memory recall and confabulation. The scales are used in forensic assessments and are also useful research tools, as they provide a quantifiable measure of levels of interrogative suggestibility and an extensive range of norms against which various hypotheses can be tested.


Gisli Gudjonsson developed two scales of interrogative suggestibility designed to be used as forensic tools to help assess the reliability of confessions that have been retracted. The scales also help identify those individuals who may be particularly vulnerable to the pressures associated with police ...

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