Psychophysiological reactions to the response phase of the rorschach and 16PF

In this pilot study, we investigated whether there was a differential psychophysiological response during the beginning, middle, and end of the administration of a performance-based instrument (Rorschach Inkblot Method, RIM; Exner, 2003) versus a self-report measure of personality (Sixteen Personality Factor Questionnaire, 5th ed. [16PF]; Cattell, Cattell, & Cattell, 1993). Results indicate that adult participants (n = 15) experienced greater electrodermal activity during the administration of the RIM as compared to the 16PF. Effect sizes for the differences between the instruments were all very large (Cohen's d = 1.71 at beginning, d = 1.1 at middle, and d = .98 at end).