Actually the studies used groups from 2-5. Here is a more scientific summary of the research... http://www.wjh.harvard.edu/~cfc/Woolley2010a.pdf http://www.wjh

Actually the studies used groups from 2-5. Here is a more scientific summary of the research... http://www.wjh.harvard.edu/~cfc/Woolley2010a.pdf http://www.wjh.harvard.edu/~cfc/Woolley2010a.pdf The interviewer just picked 10 as an arbitrary number. The researcher just went along with it.