Gender can be defined by certain organs from human bodies and some other specific characteristics of us. In some certain areas, brain is one of the part in defining males and females by studying the image and comparison. However, recently, scientists make a research on human brains and this change may affect the definitions of male and female totally.

In the article from sciencemag, scientists find out that the common knowledge that male and female have different brain images is actually a false conclusion. They make a hypothesis that reject the former conclusion (null hypothesis) and then do a whole new experiment on this. They try to make the research as comprehensive as they can to avoid the situation of lack of convincible data. They do find some differences of male and female brain images but there is no certain type of male or female brain which means that some women may have a male-like brain while some men may have a female-like brain. They also indicates that there is no standards of man and woman which we can use to identify. Moreover, the research also shows that this relation can lead to a social stereotype which exists between men and women.

On the other hand, this research is an observational experiment which means the data collected are all from the images of brains that may be affected by third variables such as fake images or chance. What’s more, the researchers mainly get their conclusion from the images, there may exist a correct or false positive which affects the final conclusion. But the result can hardly be affected by the file drawer problem which means whether the conclusion may be affected if it does not fit the public’s opinions. As mentioned in the passage, this experiment is the first in this area, so the file drawer problem may do no effect on the conclusion. Correlation does not equal to caution so in order to prove this relation, more experiments should be made with well conducted design to gather further data on it.

From the end of this article, we can infer that the scientists believe that even if there are differences between men and women’s brains, there is not one type of brain that exist only in men or women which indicates that we cannot tell the gender of a person only by looking at his or her brain image. If this statement is proved true, it may change the gender definition, just like what the article says.