Gc. Westergaard et Sj. Suomi, LATERAL BIAS FOR ROTATIONAL BEHAVIOR IN TUFTED CAPUCHIN MONKEYS (CEBUS-APELLA), Journal of comparative psychology, 110(2), 1996, pp. 199-202
This research examined lateral bias for rotational behavior in tufted
capuchin monkeys (Cebus apella). A symmetrical distribution of rotatio
nal bias was noted, with approximately equal numbers of subjects prefe
rring to turn to the right and to the left. As a group, adults did not
exhibit a lateral rotational bias. Immatures preferentially rotated t
o the left. Across subjects, the strength of rotational bias was posit
ively related to the incidence of right-eyed looking. Rotational bias
was not related to hand preference. The finding of analogous age-depen
dent patterns of rotational bias in capuchins and in humans suggests t
hat the rotational behavior of Cebus apella can be used to model an as
ymmetric response pattern that has been linked to development in Home
sapiens.