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. Author manuscript; available in PMC: 2007 Dec 19.

Published in final edited form as: Laterality. 2005 Jan;10(1):65–80. doi: 10.1080/13576500342000301

TABLE 1.

Distribution of hand preference for five behaviours recorded in captive and field studies

	Captive			Wild
	#L	#R	#A	#L	#R	#A
Scratch¹	2	5	1	14	23	44
Groom²	4	4	24	16	29	40
Eat³	15	9	36	21	14	44
Pick-up⁴	51	52	86	27	17	29
Hold⁵	36	6	81	19	25	11

L = Left, A = Ambiguous, R = Right.

¹

Data from Marchant & McGrew, 1996; McGrew & Marchant, 2001; Leavens, Aureli, Hopkins, & Hyatt, 2001.

²

Data from Boesch, 1991; Marchant & McGrew, 1996; McGrew & Marchant, 2001; Marchant, 1983; Steiner, 1990.

³

Data from Marchant & McGrew, 1996; McGrew & Marchant, 2001; Marchant, 1983; Steiner, 1990.

⁴

Data from Boesch, 1991; Marchant & McGrew, 1996; McGrew & Marchant, 2001; Sugiyama et al., 1993; Hopkins, 1993 (quadrupedal only); Marchant, 1983 (nonsocial reach only); Heestand, 1986; Steiner, 1990; Tonooka & Matsuzawa, 1995; Colell et al., 1995.

⁵

Data from Marchant & McGrew, 1996; McGrew & Marchant, 2001; Marchant, 1983; Steiner, 1990; Toback, 2000.