Development with MBTI. Growing up with the MBTI- personality types.
I think you should look at this.
Myer Briggs did research (Briggs, 1942). The research was based on Jung's types. And found some types.
Introverted vs extroverted, the start at birth.
If we study this and compare this to all we know about how a person starts life, without being external, and with…