Brain-Quadrant Unifying Theory of Personality Types & Societal Roles: More Connections

Thomas J. Schroeder
3 min readSep 2, 2023

In previous articles, we provided a new, neuroscientific way for you to determine if you are left- or right-brained, what brain-based interaction style you use, and your brain-based personality type and societal role.

(To recap, not only do you favor a side of the brain, but you also favor a quadrant of it. This quadrant dictates your preferred interaction style, personality type, societal role, learning style, buying style, and much more… including even your social media style, exercise style, and the types of doctors!)

Even if you’ve yet to read the previous articles, I suspect that when you review the following table, one of the brain’s quadrants and its associated descriptions will strongly resonate with you more so than the others. (We do, though, also have a second and third favored quadrant, so some factors related to them might resonate with you too.)

Summary of descriptions related to each of the four quadrants of the brain’s neocortex

In this article, we’ll further explore the associated traits and characteristics of these four quadrants via numerous factors (including various personality types and societal roles descriptions, but also much more). As you read through the tables and associated information, the same quadrant from above will likely resonate with you more than the others.

General Traits Correlations

General Traits Correlations

Response/Reaction Correlations

Response/Reaction Correlations

Learning Style Correlations

Learning Style Correlations

Buyer Style Correlations

Buyer Style Correlations

Miscellaneous Correlations

Miscellaneous Correlations

Four Temperaments Correlations: Modern Times

Note: As stated in a previous article, having identified an underlying pattern with each brain quadrant, it unintendedly provides a unifying model of most of the other models related to temperaments, personality types, and societal roles, as well as also learning styles and much more. Through this underlying root pattern, we can more readily see the similarities to the various models and more readily understand their differences. It also illuminates where these other models likely have errors, unveiling why they have been questioned and criticized.

Four Temperaments Correlations: Modern Times

Four Temperaments Correlations: Earliest Origins

Four Temperaments Correlations: Earliest Origins

Concluding Remarks

I invite you to share your observations and insights regarding your favored quadrant of the brain. Feel free to ask any questions or contribute otherwise to the discussion.

Also, if you’ve yet to read my related, detailed articles on interaction styles, personality types / societal roles, one’s preferred side of the brain, brain-based sex differences, and even a brain-based explanation of handedness, check them out!

Together, let’s continue unraveling the mysteries of the human brain and uncover the profound implications they have for our lives.

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Thomas J. Schroeder

Author. Brain Geek. Personal Development Junkie and Coach.