391) has pointed out that results of validity studies on the Rorschach have been mixed, but are confounded by various factors including the “type of scoring system, experience of the scorer, and type of population.” Early studies produced validity scores of. Weiner (2001), for example, stated that the Rorschach has a validity effect size “almost identical” to the MMPI (Weiner, 2001, p. Validity in this case can be evaluated by comparing the Rorschach with clinical data or with other established tests of personality.
Validity depends on the ability of a test to measure the constructs that it is purported to measure (Wiener & Greene, 2008). Therefore, it can be concluded that the Comprehensive System can yield high reliability when used under the conditions applied in these studies. It was further noted that the most relied upon factors, ratios and percentages, were among the most reliable. However, the most unreliable variables were attributed to state changes. 92 over a 1-year interval considering 41 variables four of them were above. Exner (as cited in Groth-Marnat, 2009, pp. Aside from inter-rater reliability, test-retest reliability is another important consideration. Most of these studies reported reliabilities in the range of 85% to 99%. They also reviewed 24 previously published papers, all reporting various inter-rater reliabilities. They reported that in their own study, among 84 raters evaluating 70 Rorschach variables, there was a strong inter-rater reliability, particularly for the base-rate variables. Viglione and Taylor (2003) specifically examined this issue using the Comprehensive System. Reliability depends on the ability to achieve a given measurement consistently (Weiner & Greene, 2008). A final condition is that it be applied with a suitable population and with an appropriate purpose of diagnosis or assessment, for which validity has been demonstrated. The most widely recognized system is the Comprehensive System (CS) described by Exner (1993). Of the structured methods, there are more than one option. Another condition is that a known and structured method of assessment be used. One is that it is administered by an experienced, competent, and trained examiner. This report discusses the reliability and validity of the Rorschach, based upon a review of relevant literature.īased upon published reports, the Rorschach can be regarded as a reliable and valid psychometric instrument, given that certain conditions are met. There is an enormous literature on the Rorschach, yet it remains, after nearly 100 years, a controversial instrument. It is intended to elicit accurate information of diagnostic value in clinical work. Based upon the subject responses, a set of variables can be determined, which are used to define their personality along a set of various axes. It is administered by an examiner who asks questions and records answers.
INK BLOT TEST RELIABILITY AND VALIDITIY SERIES
The Rorschach is a psychometric tool that uses a series of inkblots shown to a subject, and elicits verbal responses as to what the individual sees in the images.
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