Behavior as a young child

http://en.wikipedia.org/wiki/Cho_Seu..._a_young_child



Cho's great aunt, Kim Yang-soon, described Cho as "cold" and a source of distress as an 8-year-old. According to Kim, the boy rarely talked; after arriving in the U.S., Cho's parents were told that he had autism, a developmental disability marked by unresponsiveness and delayed speech.[41]

Behavior at middle school & high school

In middle school and high school, Cho was teased and picked on for his shyness and unusual speech patterns. In English class at Westfield High School, he looked down and refused to speak when called upon, said Chris Davids, a high school classmate. After one teacher threatened to give him a failing grade for not participating, Cho began reading in a strange, deep voice that sounded "like he had something in his mouth," Davids said. "The whole class started laughing and pointing and saying, ‘Go back to China.’" Another classmate, Stephanie Roberts, stated that "There were just some people who were really mean to him, and they would push him down and laugh at him. He didn't speak English really well, and they would really make fun of him."[42] CNN and other sources reported that Cho had been bullied in high school, and that students worried that he had a "hit list" of other students he wanted to kill.[43][44]

Behavior at Virginia Tech

Fellow students described Cho as a "quiet" person who "would not respond if someone greeted him." Student Julie Poole rec