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Brief Communication
Pelvic sexual dimorphism and relative neonatal brain size really are related
Article first published online: 27 APR 2005
DOI: 10.1002/ajpa.1330970209
Copyright © 1995 Wiley-Liss, Inc., A Wiley Company
1096-8644/asset/cover.gif?v=1&s=c25957633aab6b6ac1922fea9d9a5103f0357fec "American Journal of Physical Anthropology")
Additional Information
How to Cite
Ridley, M. (1995), Pelvic sexual dimorphism and relative neonatal brain size really are related. American Journal of Physical Anthropology, 97: 197–200. doi: 10.1002/ajpa.1330970209
Publication History
- Issue published online: 27 APR 2005
- Article first published online: 27 APR 2005
- Manuscript Accepted: 13 OCT 1994
- Manuscript Received: 23 FEB 1994
- Abstract
- References
- Cited By
Keywords:
- Birth;
- Brains;
- Comparative methods
Abstract
Primate species in which the neonatal brain size is large relative to the birth canal tend to have more sexually dimorphic pelves: this is a classic comparative relation, discovered by Schultz and Leutenegger. The original work did not correct for phylogenetic nonindependence of the data points; it only partly corrected for body size; it used ratios in both variables, and the size of the female pubis featured in both x- and y-variables. A recent publication by Tague placed a question mark over the validity of the relation. I therefore retested it, correcting for all four statistical defects. A strongly significant statistical relation exists. © 1995 Wiley-Liss, Inc.