Scaling methods to measure psychopathology in persons with intellectual disabilities
Section snippets
History
The first scale for assessing psychopathology for persons with ID appeared in 1983 (Kazdin, Matson, & Senatore, 1983). The authors describe the Psychopathology Instrument for Adults with Mental Retardation (PIMRA). This scale, which is still in widespread use today and has been translated into many languages, was designed by the second author and modeled after structured interviews such as the Schedule for Affective Disorders and Schizophrenia which were very popular at the time (Endicott &
The scales
Fourteen general measures of psychopathology were located with published studies employing persons with ID. A number of these scales have been studied infrequently. For the purposes of this paper, we are defining infrequently studied scales as those where six or fewer papers have been published. Refer to Table 1 for a list of infrequently studied measures discussed in this paper. The second category is labeled frequently studied scales and is defined as measures with seven or more papers
Final remarks
The development of measures of psychopathology for persons with ID has made great strides in the last three decades. A large number of measures for adults and children have emerged. A few of these measures have been studies extensively in both North America and Europe. One issue that is evident at this point is that no one measure will be sufficient. Measures specific to children and adults with scales for mild and moderate ID as well as other measures for severe and profound ID are needed.
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