` ::::::::::Well in one sense that is the difference.  Anyone who looks at any of the Snellen charts (even the one used for illiterates) can agree on what the chart saysthe same is not true of the Rorschach ``test``.  A Star trek fan like my self might say Klingon battleship for card VI for example; now just how do you score that?!?  Furthermore as Robert F. Joseph M. Masling's (2005) Scoring the Rorschach: Seven Validated Systems shows there is more than one way the Rorschach cards are used including methods dating back to the 1950's despite Lee Cronbach stating in 1959 ``The test has repeatedly failed as a prediction of practical criteria. There is nothing in the literature to encourage reliance on Rorschach interpretations.``  Ie some Rorschach systems still used in 2005 are invalid per standards given 50 years ago!  `