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Publikationstyp: Zeitschriftenaufsatz
Dokumenttyp: Originalarbeit

Jahr: 2019

AutorInnen: Laumer, IB; Auersperg, AMI; Bugnyar, T; Call, J

Titel: Orangutans (Pongo abelii) make flexible decisions relative to reward quality and tool functionality in a multi-dimensional tool-use task.

Quelle: PLoS One. 2019; 14(2):e0211031

Autor/innen der Vetmeduni Vienna:

Auersperg Alice Isabel Marie

Beteiligte Vetmed-Organisationseinheiten
Messerli Forschungsinstitut, Abteilung für Vergleichende Kognitionsforschung

Zugehörige(s) Projekt(e): Werkzeugbau im Goffini Kakadu (Cacatua goffiniana)

Making economic decisions in a natural foraging situation that involves the use of tools may require an animal to consider more levels of relational complexity than merely deciding between an immediate and a delayed food option. We used the same method previously used with Goffin´s cockatoos to investigate the orangutans' flexibility for making the most profitable decisions when confronted with five different settings that included one or two different apparatuses, two different tools and two food items (one more preferred than the other). We found that orangutans made profitable decisions relative to reward quality, when the task required the subjects to select a tool over an immediately accessible food reward. Furthermore, most subjects were sensitive to work-effort when the immediate and the delayed option (directly accessible by using a tool) led to the same outcome. Most subjects continued to make profitable decisions that required taking into account the tool functionality. In a final multidimensional task design in which subjects had to simultaneously focus on two apparatuses, two reward qualities and two different tools, the orangutans chose the functional tool to access the high quality reward.

Keywords Pubmed: Animals
Delay Discountingphysiology
Models, Biological
Tool Use Behavior

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