There are tests that have right answers, which are returned with a number on top in a red circle, and there are tests with open-ended questions, which provide insight into the test taker’s mind.

Psychologists say Wikipedia’s entry jeopardizes the Rorschach test’s usefulness.

In June, Dr. James Heilman posted all 10 plates on the site, along with research about the most popular responses to each.

The Rorschach test, a series of 10 inkblot plates created by the Swiss psychiatrist Hermann Rorschach for his book “Psychodiagnostik,” published in 1921, is clearly in the second category.

Yet in the last few months, the online encyclopedia Wikipedia has been engulfed in a furious debate involving psychologists who are angry that the 10 original Rorschach plates are reproduced online, along with common responses for each. For them, the Wikipedia page is the equivalent of posting an answer sheet to next year’s SAT.