Top 10 Complex Logic Users by Personality Type
Second Draft | By John Rieping (INFP) | Written June 29, 2012 | Last Updated June 30, 2012
A question elsewhere on whether ENFJ were more logical or emotional in decision-making spurred me to examine what personality types most used the four regions of the brain responsible for complex logic. To determine that I looked at the neuroscientific study of Professor Dario Nardi, Ph.D.
Below is a ranking I made of complex logic use by all the personality types as recorded by an electroencephalography device, which tracks a brain's spontaneous electrical activity over time, in Nardi's study. Note that this list is based on averages of brain activity, and that not all members of a personality type will match this ranking. A person's background, hobbies, skill training, sex, and personal motivation will cause the person to vary from the norm. The list is not a ranking of intelligence.
1) Average ESTP (3 "complex logic" brain regions with high usage, 1 with high-mid usage) -- highest use of complex logic regions of the brain among all personality types
2) Average INTP (2 high usage, 1 low-mid usage, 1 low usage)
3) Average ISTP (2 high usage, 2 low usage)
4) Average ENTP (1 high usage, 3 low usage)
5) Average ISTJ (1 high-mid usage, 1 low-mid usage, 2 low usage)
6) Average ESTJ (1 high-mid usage, 3 low usage)
7) Average ENTJ/ESFJ/ISFJ/ENFP (2 low-mid usage, 2 low usage)
8) Average INTJ/ENFJ/INFJ/ESFP (1 low-mid usage, 3 low usage)
9) Average ISFP (1 low-mid usage, 3 low usage)*
10) Average INFP (4 "complex logic" brain regions with low usage) -- least use of complex logic regions of the brain among all personality types
It is interesting that the top four users of complex logic prefer introverted thinking, and four of the least users of complex logic prefer extraverted thinking. This makes sense insofar as extraverted thinking is results-oriented and empirical while introverted thinking is theoretical and systematic.
Regarding the lowest ranked personality type: it is important to keep in mind that we humans only have a limited amount of energy to devote to our brain at any moment. So those who more often exert themselves heavily on "complex logic" parts of the brain have less energy to spend on other areas of the brain.
We INFP tend to invest the lowest energy into complex logic so we can place more energy in other parts of the brain, such as regions responsible for devotion to loved ones, values, morality, extremely deep listening to others (precise and insightful), explaining, deciding, effective self-expression, imagination, and more. It is a trade-off with very real benefits.
* Dominant introverted-feeling types showed the lowest average activity in "complex logic" areas of the brain compared to all other personality types. Hence ISFP is ranked nine despite superficially having the same results as INTJ, ENFJ, INFJ, and ESFP.
Top 10 Complex Logic Users by Personality Type by John Rieping is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.