The Rorschach ink blot test is a psychological projective test of  personality in which a subject's interpretations of ten standard abstract designs are analyzed as a measure  of emotional and intellectual functioning and integration.  The test is named after Hermann Rorschach ( 1884-1922 )
 
The credibility of the Rorschach test is very controversial.  To have any hope of making the ink blot test appear to be scientifically valid, it was essential that it be turned into a non-projective test. The  blots can't be considered completely formless, but must be given a standard response against which the interpretations of patients are to be compared.
 

 

As I was being shown the different ink blots I was asked to tell what the different shapes looked like to me.  It was easy...this one looks like a butterfly....that one looks like an oil spill....this one looks like the shape of a country...and so on and so on.  Then the professor held up a card with an ink blot on it and my mind went blank.  I didn't say anything because it didn't remind me or look like anything to me.  The professor said "Ok, let's move on" and he continued to show me other ink blots.  Then he showed me a card and once again my mind went blank.  I said "This one doesn't remind me of anything either".  He said, "This is the same one I showed you previously that you didn't see anything".  Nothing was said about it and he concluded the test.

The following week in class we were told what our replies to the different ink blots represented.  When it was my turn to meet with the professor he explained what my replies supposedly meant.  There was nothing really unusual or out of the ordinary until he told me about the one ink blot where my mind went blank. 
He said..."That particular ink blot represents the father figure".