Direction of limb preferences in grey short-tailed opossums. Direction is given separately for male, N = 12, and female, N = 14 groups. Mean HI scores ± SE for four types of unimanual behaviour (positive values indicate left lateral bias, negative values indicate right lateral bias).*P < 0.05;**P < 0.005; n.s.: non-significant. Significant group-level preference of the left forelimb was found in females in all types of unimanual behaviour studied. Males exhibit no group preference in nest-material collecting and right-forelimb preference in the rest of behaviours.
Giljov et al. BMC Evolutionary Biology 2013 13:61 doi:10.1186/1471-2148-13-61