The Effect of Relationships on the Evolving Human Brain

Your brain is the product of 3.5 billion years of intense evolutionary pressure, including 2.7 million years as tool-using hominids and over 100,000 years as homo sapiens.

Human DNA is about 98-99% identical to chimpanzee DNA. But that crucial 1-2% difference is mainly the genetic factors affecting the brain – especially for its relationship functions. In fact, the latest science suggests that the evolution of the brain was driven in two steps having to do with the survival benefits of strong...