Some Cautionary Notes on Making Inferences about Relative Brain Size
The purpose of this paper is to call attention to some of the assumptions that are involved in analyzing and interpreting evolution of relative brain size. These assumptions are well known to the few people who generate and analyze primary data in this area, but may not be apparent to the larger audience that reads and repeats their conclusions. The assumptions I wish to consider are those involved in (1) estimating body weights of fossil species, (2) comparing relative brain sizes of different taxa or of different groups of taxa, and (3) attributing biological significance to differences in brain size.
KeywordsBrain Size Fossil Species Tooth Size Skull Length Modern Species
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