Universität zu Köln

Keupp, Stefanie ORCID: 0000-0002-5451-4256, Barbarroja, Natalia, Topolinski, Sascha ORCID: 0000-0001-9295-3463 and Fischer, Julia ORCID: 0000-0002-5807-0074 (2018). Are monkeys intuitive Aristotelians? Associations between target size and vertical target position in long-tailed macaques. R. Soc. Open Sci., 5 (4). LONDON: ROYAL SOC. ISSN 2054-5703

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Abstract

Different hypotheses have been put forward to explain the interaction between size perception and spatial position. To explore the evolutionary roots of these phenomena, we tested long-tailed macaques' performance in a two-choice discrimination task on a touchscreen and contrasted two hypotheses. First, a hierarchy association in which large objects are associated with top positions, due to a link between power, dominance and importance with top position. Second, a naive Aristotelian association in which large objects are associated with bottom positions, due to the experience that larger objects are heavier and thus more likely to be found at the bottom. Irrespective of training regime (positively reinforcing the small (Touch-Small) or large (Touch-Large) stimulus), the monkeys had a bias to touch the bottom compared to the top location. Individuals in the Touch-Small group took significantly longer to acquire the task, but subsequently made fewer mistakes. When presented with two stimuli of equal medium size, the Touch-Large group had a clear bias to touch the lower stimulus, while the Touch-Small group touched both locations at equal rates. Our findings point to an innate bias towards larger stimuli and a natural preference for the lower position, while the extent of interaction between size and position depends on executive control requirements of a task.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Keupp, Stefanie UNSPECIFIED orcid.org/0000-0002-5451-4256 UNSPECIFIED Barbarroja, Natalia UNSPECIFIED UNSPECIFIED UNSPECIFIED Topolinski, Sascha UNSPECIFIED orcid.org/0000-0001-9295-3463 UNSPECIFIED Fischer, Julia UNSPECIFIED orcid.org/0000-0002-5807-0074 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-190700
DOI:	10.1098/rsos.170889
Journal or Publication Title:	R. Soc. Open Sci.
Volume:	5
Number:	4
Date:	2018
Publisher:	ROYAL SOC
Place of Publication:	LONDON
ISSN:	2054-5703
Language:	English
Faculty:	Faculty of Human Sciences Faculty of Management, Economy and Social Sciences
Divisions:	Faculty of Human Sciences > Department Psychologie Center of Excellence C-SEB
Subjects:	Psychology
Uncontrolled Keywords:	Keywords Language MENTAL NUMBER LINE; NUMERICAL COMPETENCE; PARIETAL CORTEX; SPACE; HUMANS; REPRESENTATION; PRESCHOOLERS; EMBODIMENT; COGNITION; INFANTS Multiple languages Multidisciplinary Sciences Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/19070