Assume you wanted to determine the degree of inter-rater agreement between two forensic psychologists who were each rating 100 potential parolees in terms of their potential for committing additional violent crimes. In general, sociopaths are more likely to commit additional violent crimes than are depressed or normal individuals. Therefore, each psychologist rated each of the 100 potential parolees on a scale of 1–3 in terms of their primary personality category (1 = sociopath, 2 = depressed, 3 = normal). The results in Table 6.2 were obtained:

Using the data in the preceding table and the formula for kappa presented in the module overview, determine the level of agreement between the raters.

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Forensic Psychologist B Forensic Psychologist A Personality 1 Personality 2 Personality 3 Personality 1 44 7 9 Personality 2 10 8 10 5 20 5 Personality 3 1 3 6