The 82nd Annual Meeting of the American Association of Physical Anthropologists (2013)


Modern Morphometrics 101

DENNIS E. SLICE.

Scientific Computing, Florida State University

Friday Morning, 301D Add to calendar

The introduction of the geometric morphometric (GM) approach in latter decades of the twentieth century produced a fundamental shift in the way much shape analysis is done. These methods, future directions of their development, and examples of their application were presented in a symposium entitled "Modern Morphometrics in Physical Anthropology" at the 2002 meeting of the AAPA in Buffalo, NY. The content of that symposium was expanded and published in an edited volume of the same name.

Now in 2013, we revisit the subject with Modern Morphometrics in Physical Anthropology II, a symposium dedicated to the memory of Dr. Robert R. Sokal. In this poster, I review some of the fundamental methods of GM for those who may be less familiar with the field to facilitate their appreciation of the other research presented in the symposium. Of fundamental importance is the Procrustes superimposition that removes variation in landmark coordinates due to location, orientation, and size so that the resulting transformed coordinates can be subjected to familiar forms of multivariate dissection. Important extensions of this include the method of sliding landmarks, asymmetry analysis, partial least-squares analysis of shape modules and non-shape variables, and enhanced graphical representations of results made possible by the use of coordinate data and the retention of geometric information throughout an analysis.

This work was funded, in part, by Cooperative Research AgreementW911QY-12-2-0004 between Florida State University and the U.S. ArmyNatick Soldier Research, Development, and Engineering Center and NSF HOMINID Grant (NSF BCS 0725126) to David Strait.

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