So I've been wondering if birth order has any effect on J/P. I have a straightforward sibling line up that goes:
Middle INTj (somewhat J)
If you notice the judging gets less and less as you decline in order, and I'm wondering how common this is. A lot of the oldest child description I read is consistent with J, and a lot of the youngest child description I read is consistent with P.
Sometimes birth order isn't so straight forward, though. To figure out where you fit in you need to consider some exceptions. If there's a gap of seven years or more, between siblings, it could end up causing a sort of new order.
1st Child 14 years
2nd Child 12 years
3rd Child 5 years
4th Child 3 years
In the above situation you have a new order started, and the 2nd child would be more like a last born, and the third child would be a lot like a first born.
Another factor that can come into play is if a child is physically or mentally challenged. A friend from a while back was the younger brother of two, but in many ways he functioned like a first born because something was wrong with his older brother. I can't remember what it was, but this friend was always the smarter, more capable one. So, although he was younger, he began to function like an oldest child.
Death, multiple births, and adoption can also work to make the birth order issue more complicated.
So, if you're quite certain where you fit in the birth order line up, why don't you go ahead and vote in my poll. The following letters will represent your order:
E = only child (exclusive)
O = oldest
M = middle
Y = youngest
The following letters represent five levels of J/P.
J = J out the A
j = somewhat J... kinda questionable
x = not sure of J or P
p= somewhat p... kinda questionable
P = P like a G