Table 2.

(a) Distribution of the four bifurcation types in each hemisphere. Significant differences were found between the left and right hemispheres (McNemar-Bowker Test X²(6) = 13.74, p < .05). (b) Distribution of the four bifurcation types in each hemisphere for females (F) and males (M). No significant sex differences were found for either the left or right hemispheres.

	Superior	Inferior	Symmetric	Inverted
a
Left Hemisphere	7	27	17	7
Right Hemisphere	12	11	23	12
b
Left Hemisphere	4 F 3 M	18 F 9 M	5 F 12 M	5 F 2 M
Right Hemisphere	7 F 5 M	6 F 5 M	16 F 7 M	3 F 9 M