This paper studied on the different cultural backgrounds on KTY for junior year students of chemical engineering department of Fukuoka University (FU), Japan and King Mongkut's Institute of Technology Ladkrabang (KMITL), Thailand. Both the individual answers were the most influent to KYT final examination than the group discussion answer or the neither individual nor group discussion answer. The individual answer of FU are 52.5% and 49.4% of KMITL, respectively. Furthermore, there were some opinions in case study no. 2: he cuts the vinyl rope by using box-cutter knife for unpack the cardboard case study no. 4: he put office shelf (90kg) on the dolly with female employee a case study no.7: he loads the heavy bags to a dolly which observed only FU students. Finally, during being in-group discussion, the role of secretary and commentator be influent on the KTY final examination than leader, presentation and reporter.