Extroverted Tribal™ — outgoing tribal personality types are the most common type in the human species. Almost everything on TV, news and pop culture is communicated by talkative tribals. The 'in-crowd' mindset. Lucy of the Peanuts comic strip. President George W. Bush, junior, perfectly embodies the extroverted tribal personality, as does Sarah Palin.

Introverted Maestro™ — the ingoing maestros are the rarest personality type in our species. We all know them as nerds and geeks, or brainy types. The are often misunderstood, and interestingly, they usually don't care. They like being different. Linus of Peanuts is an introverted maestro. President Obama's introverted maestro nature isn't suited well for the constant hand-holding demanded by the tribal public. Presidents Thomas Jefferson and Abraham Lincoln are in this club too.

Extroverted Maestro™ — the outgoing maestros among us are also pretty rare, but definitley more visable. They have a take charge, know-it-all demeanor that gets attention. Many rise to leadership positions without even trying. Snoopy of Peanuts is an extroverted maestro. Former President Bill Clinton, a classic extroverted maestro, still captivates people with his knowledge and charismatic ability to communicate. President Ronald Reagan is in this club, as was Martin Luther King, Jr.

Tangible ability — a moderate ability for 3D thinking

Non-spatial ability — a strong aptitude for working with ideas, data and information, rather than physical things.

Sensor (S) — ability to see and understand the world largely in terms of what is, conventional, pleasure 'now' junkie, brilliant at getting things done. Literal, feet on the ground; local-minded.

Feeler (F) — decisions are more personal, based on inner likes and dislikes; subjective opinions and preferences, empathetic outlook. Concern for being tactful, caring.

Thinker (T) — decisions are more logical, based on external truths and objective evidence; level, fair-minded outlook. Concern for being precise, factual.