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| http://dx.doi.org/10.1098/rstb.2023.0319 | DOI Listing |
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Author Correction: Common cold viruses circulating in children threaten wild chimpanzees through asymptomatic adult carriers.
Sci Rep
July 2024
Department of Pathobiological Sciences, University of Wisconsin School of Veterinary Medicine, Madison, WI, USA.
Chimpanzees () recognize that their guesses could be wrong and can pass a two-cup disjunctive syllogism task.
Biol Lett
June 2024
School of Psychology and Neuroscience, University of St Andrews, St Andrews KY16 9AJ, UK.
When chimpanzees search for hidden food, do they realize that their guesses may not be correct? We applied a post-decision wagering paradigm to a simple two-cup search task, varying whether we gave participants visual access to the baiting and then asking after they had chosen one of the cups whether they would prefer a smaller but certain reward instead of their original choice (experiment 1). Results showed that chimpanzees were more likely to accept the smaller reward in occluded than visible conditions. Experiment 2 found the same effect when we blocked visual access but manipulated the number of hiding locations for the food piece, showing that the effect is not owing to representation type.
View Article and Find Full Text PDFAssessing the motivational value of infant video clips on chimpanzees through discrimination learning task.
Dev Psychobiol
February 2024
School of Psychological Sciences, University of Human Environments, Matsuyama, Japan.
The motivational value of visual infant stimuli in humans is considered to encourage parental behavior. To explore the evolutionary roots of this preference for infants, we examined the reward value of conspecific infant videos compared to adult ones in nine chimpanzees. We employed a novel approach, a simultaneous discrimination task with differential sensory reinforcement.
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