Today's Google Doodle honors the birthday of Hermann Rorschach, Swiss psychoanalyst famous for developing the Rorschach inkblot test.
The test is simple: individuals are shown ten inkblots, and are asked to described what they see in them. Used to detect a person's personality characteristics and emotional stability, it was very widely used in the 1960s. It is still used by psychologists today, but to a lesser extent.
The Doodle on Google's homepage today offers a combination of randomly generated inkblots and ones that obviously represent an object or a figure, such as lizards, cats or garden gnomes. You can scroll through as many inkblots as you like and share what you see on Google+, Facebook and Twitter.
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Image: Hulton Archive/Getty Images, Google