reply to post by silo13
My apologies but I am just science minded. You have to look at all angles and not jump to first conclusions. There just could be a hundred different
reasons is all.
As I always tell people, don't take any grumpiness from me personally, I am just that, grumpy.
For example, mental illness can be genetically predisposed, or passed on. Naturally, people tend to think that if there is a 50% chance that you will
get it. So say there is 4 of you, you would think that only 2 of you would have it. But the roll of the dice resets for each person, the odds of one
child doesn't dictate the odds of the rest. So if the first sibling gets it, it doesn't mean that the next persons chances are less, it is a whole
new game for each person, if that make sense.
So there could be any combination, you all could get it, or none.
A great example is if you have ever watched Little People,Big World. Here you have both parents with dwarfism. That increases the chances of a child
having it to 75%(dont quote me though). But all of their children but one is normal sized. Naturally you would think the first child is normal and the
remaining odds would leave the rest of the children with dwarfism gene. But three other times, the dice rolled for the normal sized gene.
Genes aside, other variables could include nurture, not nature. Even birth order, age differences can affect the outcome of children.
If you ever want to look into something interesting, and having 3 other siblings you could definetly compare, look into birth orders.
Another example is my mum is the oldest of 9 kids. The youngest one is the most successful. Because she was the baby and the other kids were older,
she got more attention, and my grandparents were more well off and could afford to pay for a good college by that point.
[edit on 14-5-2010 by nixie_nox]