Anthropologists: why do children grow up selfish?
Austrian academics from the University of Vienna said that children with short index fingers are very selfish in nature.
This phenomenon is most likely associated with the effects of testosterone in the uterus, since this hormone influences the development of the length of the fingers.
Anthropologists claim that higher testosterone levels during pregnancy can lead to the effect of masculinization in different sexes. However, since estrogen is produced very much, the index and ring fingers become similar in length.
As a result, the researchers conducted an experiment where they found that babies who were exposed to high levels of testosterone during pregnancy, shared stickers less often. Scientists have regarded this as a purely masculine strategy, which leads to selfishness.
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