Let's talk about Korea-
North and South Koreans "think that they know each other very well. It's their mistake," Jeon said in a telephone interview with Asia Times Online.
Even though the Korean people had lived as a single nation state for more than 1,300 years before they were divided into two countries at the end of World War II,
Jeon believes the difference created during the ensuing 60 years is significant and damaging enough to require serious attention and concern.
To get to the bottom of the North Korean psyche, Jeon had to ask them questions. But how?
North Korean settlers in the South were usually reluctant to talk about their stories to others - much less to a psychiatrist -
as they feared that they were under suspicion and surveillance by the South Korean government.
It is a mentality and old habits they transferred from North Korea.
Some defectors frequently change their phone numbers to avoid contacts with other people.
look how culture affects the psyche of people 
http://www.atimes.com/atimes/Korea/II05Dg01.html
hope we could discuss how culture affects people of the same race much more .. of different race-
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