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Open Journal of Jungian Typology Posts

Differentiating the Types via the Tertiary Function: ESTP and ISTP

By John Barnes Last article we discussed the idea that the tertiary function sets apart sister types. We saw this in action with the two NTP’s tertiary functions, Fe and Si. Now we’ll see the same principle with the two STP types’ tertiary functions Fe and Ni. Fe is repressed in the ISTP. In the INTP this repression combined with their Ne/Si axis gives them (to quote Theodore Millon) an eccentric and intellectual expression and an alienated self-image. In the ISTP because of their Se/Ni axis their repressed Fe manifests as a more intense and direct “no-bullshit” approach to life.…

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Differentiating the Types via the Tertiary Function: ENTP and INTP

By John Barnes The orientation of the tertiary function has been hotly debated (even Myers did not finally settle on one orientation), but for the sake of simplicity I will be using the Standard Model. So the tertiary function is extroverted if the dominant function is extroverted. Hence according to the Standard Model, an ENTP has Ne, Ti, Fe, Si. Starting with John Beebe’s association of the tertiary function with the Child Archetype, the tertiary function has become known as the puerile function. I think this is a fair assessment but I prefer to think of the tertiary function as that which…

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