Revision and further assessments of the Prison Locus of Control Scale

The report of initial measurements studies conducted on the Prison Locus of Control Scale concluded with suggestions for altering the format and content to improve the psychometric properties of the scale. This paper is a report of structural, reliability, and validity studies conducted on the revised Prison Locus of Control Scale. Assessments included a test of internal consistency, factor analyses, one test each of concurrent and known-groups validity, and four tests of construct validity. The results show strong support for the reliability and validity of the revised scale, which is provided in an appendix.