| hand preference during tool use in wild bearded capuchins. | the preferential use of one limb (lateralization) has been observed in many species. this lateralization reflects functional asymmetries of the brain. right-handedness and left-hemisphere dominance seem to be the norm in humans. however, suggestions that vertebrates, particularly non-human primates, show handedness are contentious. tool use could be a driver of handedness. here i investigated hand bias during tool use activities in groups of wild capuchins (sapajus libidinosus). i observed the u ... | 2015 | 26382752 |