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Robot ethics December 4, 2006

Posted by Ron in 3790 Administrivia, Cognitive Science News.
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Those of you who were intrigued by the behavior-based robotics models might want to take Ron Arkin’s course on Robot Ethics (CS 4002). This is a class that can be substituted for CS 4001, the standard CS ethics course. It should be quite interesting.

But do I tell my wife about this…? July 7, 2006

Posted by Ron in Animal cognition, Cognitive Science News.
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The New York Times‘ most frequently-emailed article for over a week now has been a paean to operant conditioning. An animal trainer takes what works at the local marine park, and successfully applies it to. . .her husband.

Skinner would be proud.

Article: What Shamu Taught Me About a Happy Marriage (free registration required)

How widespread is faceblindness? June 2, 2006

Posted by Ron in Cognitive Science News, Neurology, Perception.
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One fascinating aspect of human cognition is that it seems to have a specialized mechanism devoted to the recognition of human faces. This mechanism is demonstrated most dramatically by a condition called prosopagnosia, or face-blindness. Victims of prosopagnosia have difficulty recognizing human faces, but little or no difficulty with other visual recognition tasks. Prosopagniacs often compensate using other recognition techniques. The music professor Dr. P with prosopagnosia in Oliver Sack's The Man Who Mistook his Wife for a Hat used voice recognition, among other techniques.

Prosopagnosia was originally considered to be very rare, but CogNews notes some recent research by Ken Nakayama and Richard Russell that claims that prosopagnosia is much more widespread, with perhaps 1 in 50 people suffering from the disorder. Unfortunately, I can't find the published research itself online (they may be writing it up), since it would be good to understand the level of impairment that they examined. Their press release indicates close-cropped black-and-white photos of faces were used.

One fascinating part of the researchers' main web site, www.faceblind.org, is its list of personal web pages of prosopagnosiacs, who talk about how they deal with their disability. One prosopagnosiac, Bill Choisser, has written an online book about his experiences with prosopagnosia that is fascinating to read. For example:

"For me, I feel a very definite difference when my eyes drift upward across the jaw line. Below that line, what I see can evoke an emotion of attachment. Above it, I feel mainly emptiness, and the shape of hair lines is all I can remember easily. Two short-haired guys with beardless faces will look exactly alike. I can no more tell them apart than I can two German shepherds. The only exception, as I said above, is for people whom I've seen many many times." (Choisser, Chapter 8A)

Flipper was only his stage name… May 18, 2006

Posted by Ron in Animal cognition, Cognitive Science News.
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As we discussed in class, researchers in Scotland have shown that dolphins use whistle sequences that act as their unique identifiers — in other words, they appear to name themselves. They are the only animals (aside from parrots) known to have this behavior.