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Pigeons Learn to Use Touch Screens

by Bidita Debnath on June 1, 2013 at 11:49 PM
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 Pigeons Learn to Use Touch Screens

At the University of Iowa, a new research by psychologists has suggested that pigeons are capable of making highly intelligent choices, sometimes with problem-solving skills to match.

The study by Edward Wasserman and colleagues centered on the "string task," a longstanding, standard test of intelligence that involves attaching a treat to one of two strings and seeing if the participant (human or animal) can reel in that treat by pulling the correct string.

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In this case, the UI researchers took the pigeons into the digital age: The birds looked at a computer touch screen with square buttons connected to either dishes that appeared to be full or empty. If the bird pecked the correct button on the screen, the virtual full bowl would move closer, ultimately to the point where the pigeon would be rewarded with real food.

"The pigeons proved that they could indeed learn this task with a variety of different string configurations-even those that involved crossed strings, the most difficult of all configurations to learn with real strings," said Wasserman, Stuit Professor of Experimental Psychology and the corresponding author of the study.
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In experiments, the authors found the pigeons chose correctly between 74 percent and 90 percent of the time across three varieties of string tests. The breadth of the string tests, coupled with the pigeons' accuracy, suggest that virtual string tests can be used in place of conventional string experiments-and with other animal species as well, the researchers said.

In videos that the researchers took, the pigeons in many instances scan and bob their heads along the string "often looking toward and pecking at the dish as its moves down the screen," the authors wrote, suggesting the birds noted the connection between the virtual strings and the dishes.

"These results not only testify to the power and versatility of our computerized string task, but they also demonstrate that pigeons can concurrently contend with a broad range of demanding patterned-string problems, thereby eliminating many alternative interpretations of their behavior," the authors wrote.

The paper was first published online in March in the journal Animal Cognition.

Source: ANI
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