caa a22 4500 605541809 CHVBK 20210128100918.0 cr unu---uuuuu 210128e20150101xx s 000 0 eng 10.1007/s10071-014-0805-5 doi (NATIONALLICENCE)springer-10.1007/s10071-014-0805-5 Evaluating handedness measures in spider monkeys [Elektronische Daten] [Eliza Nelson, Alejandra Figueroa, Stephanie Albright, Maria Gonzalez] Despite long-standing interest and a vast body of literature, there is still disagreement as to how handedness should be measured in nonhuman primates. The primary goal of this study was to evaluate two common measures of handedness in nonhuman primates using the spider monkey, a unique study species due to its lack of a thumb and limited dexterity. Contrary to our predictions and previous findings in Ateles, there was no evidence for group-level hand biases on either the coordinated bimanual TUBE task or a unimanual reaching task. At the individual level, monkeys exhibited preferences on both tasks. There was a leftward trend on the bimanual task and a rightward trend on the unimanual task. Monkeys that were strongly lateralized on the bimanual task showed a comparable hand preference on the unimanual task, whereas monkeys with a moderate preference on the bimanual task shifted to the opposite hand on the unimanual task. Comparing across measures, the two hand-use patterns reported (consistent and shift) might have obscured group-level findings, given the available sample size. Overall, these data reaffirm that task type influences hand use in primates, and multiple measures are needed to fully characterize the construct of handedness. Consideration should be given to the difficulty required between tasks as well as between species. Springer-Verlag Berlin Heidelberg, 2014 Handedness nationallicence Hand preference nationallicence Laterality nationallicence Spider monkey nationallicence Nonhuman primate nationallicence Nelson Eliza Department of Psychology, Florida International University, 11200 S.W. 8th Street DM 256, 33199, Miami, FL, USA aut Figueroa Alejandra Department of Biological Sciences, Florida International University, Miami, FL, USA aut Albright Stephanie Department of Psychology, Florida International University, 11200 S.W. 8th Street DM 256, 33199, Miami, FL, USA aut Gonzalez Maria Department of Biological Sciences, Florida International University, Miami, FL, USA aut Animal Cognition Springer Berlin Heidelberg 18/1(2015-01-01), 345-353 1435-9448 18:1<345 2015 18 10071 https://doi.org/10.1007/s10071-014-0805-5 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10071-014-0805-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Nelson Eliza Department of Psychology, Florida International University, 11200 S.W. 8th Street DM 256, 33199, Miami, FL, USA aut NATIONALLICENCE 700 1- Figueroa Alejandra Department of Biological Sciences, Florida International University, Miami, FL, USA aut NATIONALLICENCE 700 1- Albright Stephanie Department of Psychology, Florida International University, 11200 S.W. 8th Street DM 256, 33199, Miami, FL, USA aut NATIONALLICENCE 700 1- Gonzalez Maria Department of Biological Sciences, Florida International University, Miami, FL, USA aut NATIONALLICENCE 773 0- Animal Cognition Springer Berlin Heidelberg 18/1(2015-01-01), 345-353 1435-9448 18:1<345 2015 18 10071