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Figure 4. The relation of elapsed time and total line number to multilingual chat.
Usually when someone utters a sentence regularly in a certain interval, the
chart shows linear growth. Temporal more frequent conversation pushes the
graph to the upper-left, while less conversation pushes it to lower-right. We
can observe from the chart that group 1 showed less communication when
English was used and more frequent communication when mother tongues
were used. The group 2 shows that there was delay of conversation (area B)
caused by large silence (area C) when English was used. When the mother
tongues were used, the graph shows a steep inclination that means a rapid
interchange of conversation, and students needed just a half amount of time
to solve the problems compared with the case in English (area A). From
these facts, we can conclude that discussion is delayed by the language barrier
when English is used, ending without getting mutual enhancement, while
the use of the mother tongues makes discussion smoother, leading to some
excitement by collaboration of the group.
2) How is the Shared Whiteboard Used to Help Communication
Figure 5 shows an example in which the biggest movement was observed,
displaying the communication with multilingual chat and the contents on the
shared whiteboard along one time line. The timeline includes each avatar’s
talking and use whiteboard.
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