Researchers find that counting may be an evolutionary trait that helps fish and animals survive.
Our ability to count isn’t a distinct human trait. Animals can count, too. And, just like humans, some animals are better at math than others.
It’s a standard test of basic numerical abilities, a metric that correlates with calculation abilities, says Butterworth. He uses discrimination, which is also known as acuity, or dot enumeration efficiency, to measure these abilities. As part of his experiments on humans, Butterworth developed the “Weighted Confidence Sharing Theory” in which humans, making separate decisions, had to determine if there were more blue dots or more yellow dots. If they disagreed, they had to discuss it and come to a joint decision.
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