Our personality types evolved during the Stone Age.
For almost all of our two million-year history, we humans lived in small bands as hunter-gatherers. It was under these conditions that our personality types evolved.
Current research in endocrinology, anthropology, archaeology, and climatology has shed light on how our hunter-gatherer past shaped who we are today. It indicates that our personality types evolved in three stages:
- The evolution of Feminine and Masculine
Two million years ago, human gender roles began to diverge in significant ways. This spawned the gender-related differences that we call the Feminine and Masculine.
- The evolution of our basic temperaments
Our gender differences then enabled us to develop two mating strategies, one suited to forest environments, the other to the savannah. These two mating strategies operated through our four basic temperaments.
- The evolution of new creative modes
Finally, as humans began living in larger groups, we evolved four new dominant creative modes to maintain group cohesion. This resulted in people who embodied eight modes of dominant creativity.