Table 5. Procrustes distances between the original undeformed cranium and each of the five manual deformations (original to deformed column), as well as their modifications that were reflected & averaged bilaterally (original to reflected & averaged column), and algorithmically symmetrized model (original-retrodeformed).

	Trial	Original todeformed	Original to reflected& averaged	% improvement	Original to algorithmicsymmetrization	% improvement
Including curves	Cranium 1	0.07	0.07	0.0%	0.08	−14.2%
	Cranium 2	0.14	0.12	14.3%	0.10	28.6%
	Cranium 3	0.21	0.08	61.9%	0.08	61.9%
	Cranium 4	0.21	0.16	23.8%	0.19	9.5%
	Cranium 5	0.30	0.19	36.7%	0.11	63.3%
Excluding curves	Cranium 1	0.09	0.08	11.1%	0.08	11.1%
	Cranium 2	0.11	0.06	45.5%	0.10	9.09%
	Cranium 3	0.14	0.11	21.4%	0.09	35.7%
	Cranium 4	0.25	0.12	44.0%	0.15	40.0%
	Cranium 5	0.28	0.20	28.6%	0.15	46.4%

% improvement indicates the percent closer in shape the reflected & averaged model and algorithmically symmetrized model are to the original. The first values are for the landmark configuration including semilandmark curves (landmarked by A.M.). The second set of values are for the landmark configuration without curves (landmarked by S.R.F.).