from:
http://www.psychologytoday.com/articles/pto-20070320-000003.html

my thoughts for now.

1) siblings relationships in the eastern and western culture.
we need to cover both these cultures since we are afterall asians from the
eastern culture influenced by the western culture and the article is written
by an american from the western culture and addressing primarily to the
western culture. some stuff may not apply to us but some do.

2) the article did not elaborate on the age differences. i can break it down into.....
a) siblings age difference of more than 4yrs for example.
b) siblings age difference of less than 4yrs
and also, we need to compare and contrast between the 2 cultures.