Forensic Psychology and Psychiatry Arena

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Tests, Scales, and Assessments

Gudjonsson Suggestibility Scales

Psychology Press follows strict ethical guidelines for the supply of the Gudjonsson Suggestibility Scales. All potential purchasers are required to register, giving details of their professional qualifications.

• By Gisli Gudjonsson, Institute of Psychiatry, London, UK
• Published by Psychology Press
• 978-0-86377-445-4 - Complete Test with Manual and Scoring Sheets
• 978-0-86377-446-1 - Additional Scoring Sheets.

These scales, the GSS 1 and its parallel form, the GSS 2, were developed for research, forensic and clinical applications. They give a reliable measure of verbal memory recall - both immediate and delayed - and "interogative suggestibility", which has been shown to have two distinct components, "yield" and "shift". The GSS 1 and GSS 2 also provide objective measures of "confabulation", which refers to problems in memory processing where people replace gaps in their memory with imaginary recollections.

The scales were developed in order to measure objectively the vulnerability or proneness of people to give erroneous accounts when interviewed. The scales are particularly applicable to police interviewing contexts, but they can be usefully applied to any interview situation, including clinical practice. The scales can be used with forensic populations, victims and witnesses to crime, mentally disordered persons, children, and adolescents.

A parallel development to the GSS 1 and GSS 2 has been the construction of the Gudjonsson Compliance Scale GCS. In contrast to the suggestibility scales, the GCS is a self-report measure of the construct of compliance, which is principally comprised of an eagerness to please and avoidance of conflict and confrontation. It complements the work conducted into "interrogative suggestibility". Research has shown that both suggestibility and compliance are relevant to police interviewing and clinical practice.

The Gudjonsson Suggestibility Scales are not available to bookshops. They are only available to chartered clinical and forensic psychologists, and to psychiatrists and research workers with the relevant training to administer the test.

Further information and prices are available on request - please contact Julie Norton on +44 (0)20 7017 7747, or through our contact form.

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