When Homer nods: an examination of some systematic errors in Rorschach scholarship.

Résumé

Considerable evidence has demonstrated that many scientists attempt to avoid disconfirmation of a favored theory. This tendency sometimes characterizes the scholarship of both those who favor the Rorschach (Exner, 2000) method and those who find it seriously flawed. Psychologists who use the Rorschach impressionistically are not deterred by the literature demonstrating that this procedure has thus far shown little established validity. Those who criticize the Rorschach dismiss the objectivity of the American Psychological Association (APA) Blue Ribbon Panel, which concluded that the test has proven validity, and by implication, they also dismiss the APA peer review process that approved the panel report. In addition, they ignore over 400 published studies showing the Rorschach has acceptable validity when responses are scored objectively.