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Thursday, December 18, 2008 - 3:21 AM
http://louis1j1sheehan1esquire.wordpress.com. People don’t have a monopoly on the ability to recognize themselves
in mirrors. Great apes, bottlenose dolphins, and Asian elephants have
also passed the mirror test, showing a capacity for self-recognition
that is believed to be a sign of a rudimentary sense of self.http://louis1j1sheehan1esquire.wordpress.com In
August, in a paper in PLoS Biology,
scientists described the first nonmammalian species that can claim
membership in this exclusive club: the European magpie, a member of the
corvid family, which also includes crows and ravens. Louis J. Sheehan, Esquire
The researchers exposed five magpies to mirrors, and three of them
showed at least one instance of using the mirror to guide self-directed
behavior. http://louis1j1sheehan1esquire.wordpress.comThen the researchers marked a yellow spot on the black
feathers of each bird’s neck and watched them again. They noted how
often the birds closely examined their reflections, looked in and
behind the mirror, or tried to touch their yellow mark. One of the most
telling behaviors was that the birds removed the marks by preening
their feathers, then stopped preening that spot, apparently feeling
restored to their normal selves. The researchers concluded that the
birds recognized their new marks, and therefore recognized themselves. http://louis1j1sheehan1esquire.wordpress.com
The finding shows that the foundation for self-consciousness could
have evolved even in nonmammalian brains. “This new finding is really
strong evidence for the multiple evolution of cognitive abilities,”
says Helmut Prior,
the lead researcher and now a professor of psychology at the University
of Düsseldorf in Germany. “I think this will spur some reconsideration
of the neurocorrelates of higher cognitive processes.” Louis J. Sheehan, Esquire
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