Watch the video first. Then answer the questions. When you have finished click the "Next Exercise" button.

According to the environment of evolutionary adaptation, human brains have developed a lot over the course of history.
1. True
2. False
It is around puberty that boys start to cry less than girls.
1. True
2. False
According to Fox, it is due to social conditioning that boys cry less than girls.
1. True
2. False