It's tragic that in countries like Argentina this test, and many other projective tests, test based in psychoanalitic pseudoscience and with lots of evidence against them, are routinely used by therapists and taught in universities. Another example of a commonly used projective tests is the HTP, where you draw a human, a tree and a person and a they are interpreted according to baseless dogmas.

If somebody wants to read details about results of research about the Rorscharch and projective tests I recommend Lilienfeld's paper "The Scientific Status of Projective Techniques". You can google it as a pdf.

And for a divulgational reading about the topic this article at Scientific American is quite good http://digitalcommons.utep.edu/cgi/viewcontent.cgi?article=1...

Fortunately in USA and Europe psychology has embraced science (or is very willing to do that, I mean, even if the research cannot be always replied or doesn't use the best methodology, the scientific method predominates). In Argentina psychologists are mainly postmodernists, anti-science, attatched to Lacan's revelations. Of course there are exceptions, but it's difficult to uproot all the charlatans from the public universities and hospitals.