The Reliability of Dangerousness Assessments. A Decision Making Exercise

Abstract
Raters (193) drawn from 6 countries and representing different professional groups considered 16 [psychiatric] case histories. Raters were asked to indicate what degree of dangerousness they attributed to each individual and what they considered to be the optimal management. The level of agreement between raters concerning the assessment of dangerousness was generally low, the level of 60% being reached for 4 cases out of 16. Psychiatrists did not reach a higher level of agreement on the ratings of dangerousness than non-psychiatrists. Psychiatrists had a tendency to rate individuals as more dangerous than did non-psychiatrists. These results do not support the use of dangerousness as a scientifically or operationally valid concept.

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