动物实验 z-bo 2020-08-21 465

　　The relationship between brain size and IQ has always been a controversial issue. A new American study said on the 25th that animal studies have shown that the greater the ratio of the brain to the body, the stronger the ability of animals to solve problems. Said that day. This suggests that animals with larger heads are smarter. Sara Benson-Amram, an associate professor at the University of Wyoming, reported in the new issue of the Proceedings of the National Academy of Sciences. There is little experimental evidence to prove this, so a relatively large head means a higher IQ. There has been controversy for a long time. Therefore, they conducted an experiment to test their problem-solving abilities against 39 species of 140 carnivores in 9 zoos in the United States, including several rare species such as polar bears, arctic foxes, otters, wolves, and two-headed Parrot, Snow Leopard and Wolverine. It is designed. in

　　In the experiment, each animal took 30 minutes to remove food from an appropriate metal cage. These metal cages are bolted on one side and can be opened. There are things that these animals like, such as bamboo for pandas and meat steak for snow leopards. The results showed that the higher the proportion of human brains, the higher the success rate of animals, and the lower the proportion of human brains, the worse the ability of animals to solve problems. Specifically, out of 140, 49 were able to successfully remove food from the cage. Among them, bears have the highest success rate, with seven out of ten successful. Meerkats and mongooses fail the most, never succeeding. In addition, research shows that this problem-solving ability has nothing to do with manual agility and whether animals belong to a social species. The latter shows that the so-called "social brain hypothesis" is not always correct. The "social brain hypothesis" means that the more groups a group of animals live in, the smarter they are.

　　Honmatsu-Amram said in a statement: “This study performed a rare analysis of the problem-solving ability of carnivores. The results of the experiment provide important information that the size of the brain reflects the problem-solving ability of animals. Support will enable us Have a better understanding of why certain species have evolved into larger brains."