Can Neuroscience Provide a New Foundation for the Rorschach Variables?

Abstract. Recent progress in neuroscience has made it possible to use neurophysiological techniques to validate and deepen the interpretation of Rorschach variables. The aim of this article is to review the results from Rorschach studies using the neurophysiological approach to discuss the consistencies and inconsistencies between the different results, and then to consider the future direction of Rorschach research in this area. We also provide unpublished data to complement the picture from peer-reviewed studies. Two main approaches to neuropsychological studies on the Rorschach exist. One approach is to measure brain activities directly during the Rorschach administration; a series of studies using multiple neurophysiological methods revealed activation of the mirror neuron system with relation to human movement responses. Another possible approach is to investigate whether individual differences in Rorschach scores can be explained by neurophysiological measurements during the administration of another psychological task. This article reviews how these two approaches provide novel insights into the Rorschach Test.