TABLE 2.

Distribution of hand preferences and degree of population-level manual bias

Manual behaviors	# L	# A	# R	N	M.HI	S.E.	t	p
Unimanual reaching	3	20	9	32	0.11	0.06	1.99	>0.05
Females	2	11	6	19	0.11	0.07
Males	1	9	3	13	0.12	0.10
Bimanual feeding - Frequ.	4	7	21	32	0.37	0.07	4.72	<0.001
Females	1	3	15	19	0.49	0.09
Males	3	4	6	13	0.19	0.11
Bimanual feeding - Bouts	2	12	18	32	0.35	0.06	5.01	<0.001
Females	1	5	13	19	0.48	0.08
Males	1	7	5	13	0.16	0.10

^#L: number of left-handed subjects; # R: number of right-handed subjects; # A: number of ambiguous handed subjects; N: sample of subjects; M.HI: Mean Handedness Index score of N individuals that corresponds to degree of population-level handedness, the sign indicates the direction of the manual bias (negative value: left-hand bias, positive value: right-hand bias); S.E.: Standard Error of the mean; t: value of the t resulting from a t-test; p: significance of p