In the modern psychiatric
world, inkblot tests
are scored by a computer
which interprets your answers and returns its conclusions. Presumably, this is to prevent the psychiatrist
from imposing his own personality
on the patient's answers. The doctors are, however, unwilling to allow anyone other than a graduate student
or other researcher
in psychiatry learn even the basics of how the computer grading works.
Some doctors use inkblot tests to aid diagnosis of patients who are considered too likely to skew more traditional tests. Tests which involve axes of results and multiple-choice questions, while easy to grade, also allow an intelligent patient who is paying attention to guess how their answers will be interpreted, and respond according to what they think a doctor would like to hear. Although most everyone is familiar with the idea that "seeing butterflies means you're healthy and seeing dead bodies mean's you're sick", it's very difficult
to judge what seeing an alien or a building would mean. (I will note that
even that little bit of information is not necessarily true; I have been informed by a psychiatrist who specialized in giving the test that a dead cat is a completely normal result for one of the classic ink blots.)
Rorschach tests are also frequently accompanied by other projective personality tests in order to gain a broader picture of the patient's mind.