Manabu Nakamura Takumi Ichimura Kazuya Mera Setsuko Otsuki Support System for Analysis of Student's Motivation in Group Learning. 432-438 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2774&spage=432 2003 conf/kes/2003-2 KES db/conf/kes/kes2003-2.html#NakamuraIMO03