Table 2.

Summary of model comparisons between full and reduced models using a likelihood ratio test

	χ2	df	p
Closest point	3.83	5	0.57
Center of head	2.43	4	0.66
Edge of head	1.14	4	0.89
Center of figure	2.53	4	0.64
Edge of figure	2.78	4	0.60
Hand	1.34	4	0.86