I was going through a friends blog and one thing made me think a lot about personality traits and how they vary even if you come from the same gene pool , personalities can be so so different. Inspite of being brought up by the same set of parents, same set of rules and the same atmosphere, brothers and sisters grow up so different from each other and develop individual personalities.The older sibling in most cases assuming responsibilty for the parents, and is held responsible for everything around where as the younger ones sometimes is a lil more go lucky .Some are born caring while the others are just into themselves. I wonder what makes them so . The circumstances of birth, upbringing are all the same but the people turn out so so different.
In some cases some children are absolutely not bothered about their aged parents, they dont give them attention or care and in some other cases they feel their moral obligation for providing for their parents ends at monetary assistance forgetting about the emotional and moral support they should be extending towards the people who all their lives put their kids before their own lives. Sometimes one child takes on the responsibility of the parents where as the other is absolved of any such duties. Well , both have the same parents but how do their attitudes differ so much???
Sometimes there is such cases of competition and sibling rivalry its hard to resolve them.As kids , there is something called sibling rivalry where one wants to outsmart the other, but in some cases it goes on to become an unhealthy trend where the competitiveness leads to ugly scenes of disagreements that continues right into adulthood.
Looking at my own home, I Have a sister 3 years younger than me and we are poles apart.Not just the way we look, the way we think, the way we behave ,the whole personality is absolutely different. What would one attribute it to?
The human mind is so complicated and intrinsic am sure no two minds can be the same. Apart from that the atmosphere around and our individual experiences mould our personalities.So the environment may be different however slight the change and so also the way the kids look at things. Each one wants to be a different individual so they set out to develop different qualities that make them different or stand out 
Maybe these are the reason siblings are so different from each other.
