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Mirror TestThe Mirror test is a measure of self awareness developed by Gordon G. Gallup. The test gauges self awareness by determining whether an animal can recognize its own reflection in a mirror as an image of itself. This is accomplished by surreptitiously marking the animal with a odourless dye, and observing whether the animal reacts in a manner consistent with it being aware that the dye is located on its own body. Such behaviour might include turning and adjusting of the body in order to better view the marking in the mirror, or poking at the marking on its own body with a finger while viewing the mirror. Animals which have passed the mirror test are chimpanzees, orangutans, dolphins and humans. Surprisingly, gorillas have not passed the test. Human children tend to fail this test until they are at least 3-4 years old. Dogs and 2 year old children, for example, usually react to a mirror in fear, curiosity or simply ignore it. There is some debate in the scientific community as to the value and interpretation of results of the mirror test.
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