HCI reference

go check this out.
for further detail that u cant easily understand froom slide.

http://www.cs.bham.ac.uk/~rxb/Teaching/HCI/HCIqnans.htm

http://www.psy.gla.ac.uk/~steve/HCI/exam.html

http://www.eecs.berkeley.edu/GradAffairs/CS/Prelims/hciqu.html