ABSTRACT
In his book-length review of the executive functions, Dr. Russell Barkley (2012) explored the reasons that these skills evolved in humans in the first place. He makes the compelling case that it was the selection pressures associated with humans living in larger groups of genetically unrelated individuals, which made it selectively advantageous to have good self-regulation skills. That is, these abilities became more important to survival as humans became more interdependent with and reliant on dealings with people who were not family.
