I took the survey and am a fourth child ISFJ. What I haven't seen
discussed in personality formation is the effect of adult behavior on
children from adults other than parents and older siblings. I remember
vividly arriving for the first day of school each year having been
assigned a teacher who had taught my siblings. I never knew if the
teacher would compare me to the black sheep behavior of my oldest
brother or the straight-A behavior of my oldest sister, but I knew
that I would always be prejudged.