@article{ref1,
title="Size and structure of freely forming conversational groups",
journal="Human nature",
year="1995",
author="Dunbar, R. I. M. and Duncan, N. D. C. and Nettle, D.",
volume="6",
number="1",
pages="67-78",
abstract="Data from various settings suggest that there is an upper limit of about four on the number of individuals who can interact in spontaneous conversation. This limit appears to be a consequence of the mechanisms of speech production and detection. There appear to be no differences between men and women in this respect, other than those introduced by women's lighter voices.<p /><p>Language: en</p>",
language="en",
issn="1045-6767",
doi="10.1007/BF02734136",
url="http://dx.doi.org/10.1007/BF02734136"
}