Neocortex size and group size in primates: a test of the hypothesis Export

@article{citeulike:280459, abstract = {In this paper, the analysis of the factors influencing the evolution of neocortex size in primates given in Dunbar (1992) is extended in three specific ways. (1) An independent test is undertaken of the hypothesis that group size is a function of relative neocortex size in primates by using estimates of neocortex size to predict group size for those species that were not involved in the original analysis. The results confirm the results of the earlier analysis. (2) A more satisfactory test is attempted of the alternative hypothesis that species which differ in the degree of extractive foraging also differ in relative neocortex size. This particular version of the hypothesis is rejected. (3) These results are used to identify the "cognitive" group size for those species of baboons that live in multi-layered social systems.}, author = {Dunbar, R. I. M.}, citeulike-article-id = {280459}, citeulike-linkout-0 = {http://dx.doi.org/10.1006/jhev.1995.1021}, citeulike-linkout-1 = {http://linkinghub.elsevier.com/retrieve/pii/S0047-2484(85)71021-4}, citeulike-linkout-2 = {http://www.sciencedirect.com/science/article/B6WJS-45S94C8-24/2/518b1a5133c931fc2b28fa8477728fc8}, doi = {10.1006/jhev.1995.1021}, journal = {Journal of Human Evolution}, keywords = {allometric-scaling, animal-model, evolution, neuro-evolution, teaching}, month = {March}, number = {3}, pages = {287--296}, posted-at = {2008-11-27 01:25:08}, priority = {2}, title = {Neocortex size and group size in primates: a test of the hypothesis}, url = {http://dx.doi.org/10.1006/jhev.1995.1021}, volume = {28}, year = {1995} }

TY - JOUR ID - citeulike:280459 L3 - citeulike-article-id:280459 N2 - In this paper, the analysis of the factors influencing the evolution of neocortex size in primates given in Dunbar (1992) is extended in three specific ways. (1) An independent test is undertaken of the hypothesis that group size is a function of relative neocortex size in primates by using estimates of neocortex size to predict group size for those species that were not involved in the original analysis. The results confirm the results of the earlier analysis. (2) A more satisfactory test is attempted of the alternative hypothesis that species which differ in the degree of extractive foraging also differ in relative neocortex size. This particular version of the hypothesis is rejected. (3) These results are used to identify the "cognitive" group size for those species of baboons that live in multi-layered social systems. IS - 3 JF - Journal of Human Evolution EP - 296 TI - Neocortex size and group size in primates: a test of the hypothesis VL - 28 SP - 287 KW - allometric-scaling KW - animal-model KW - evolution KW - neuro-evolution KW - teaching AU - Dunbar, RIM PY - 1995/03// UR - http://dx.doi.org/10.1006/jhev.1995.1021 ER -