J Call

Summary

Affiliation: Max Planck Institute for Evolutionary Anthropology
Country: Germany

Publications

  1. ncbi request reprint Apes know that hidden objects can affect the orientation of other objects
    Josep Call
    Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, D 04103 Leipzig, Germany
    Cognition 105:1-25. 2007
  2. doi request reprint Fission-fusion dynamics, behavioral flexibility, and inhibitory control in primates
    Federica Amici
    Research Centre in Evolutionary Anthropology and Palaeoecology, School of Biological and Earth Sciences, Liverpool John Moores University, James Parsons Building, Byrom Street, Liverpool L3 3AF, United Kingdom
    Curr Biol 18:1415-9. 2008
  3. pmc Reaching around barriers: the performance of the great apes and 3-5-year-old children
    Petra H J M Vlamings
    Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, Leipzig, Germany
    Anim Cogn 13:273-85. 2010
  4. doi request reprint Does the chimpanzee have a theory of mind? 30 years later
    Josep Call
    Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, D 04103 Leipzig, Germany
    Trends Cogn Sci 12:187-92. 2008
  5. ncbi request reprint Past and present challenges in theory of mind research in nonhuman primates
    Josep Call
    Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, D 04103 Leipzig, Germany
    Prog Brain Res 164:341-53. 2007
  6. ncbi request reprint Inferences by exclusion in the great apes: the effect of age and species
    Josep Call
    Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103, Leipzig, Germany
    Anim Cogn 9:393-403. 2006
  7. doi request reprint Do apes know that they could be wrong?
    Josep Call
    Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
    Anim Cogn 13:689-700. 2010
  8. ncbi request reprint Copying results and copying actions in the process of social learning: chimpanzees (Pan troglodytes) and human children (Homo sapiens)
    Josep Call
    Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103, Leipzig, Germany
    Anim Cogn 8:151-63. 2005
  9. ncbi request reprint 'Unwilling' versus 'unable': chimpanzees' understanding of human intentional action
    Josep Call
    Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
    Dev Sci 7:488-98. 2004
  10. doi request reprint Monkeys and apes: are their cognitive skills really so different?
    Federica Amici
    Research Centre in Evolutionary Anthropology and Palaeoecology, School of Natural Sciences and Psychology, Liverpool John Moores University, Liverpool L3 3AF, UK
    Am J Phys Anthropol 143:188-97. 2010

Detail Information

Publications67

  1. ncbi request reprint Apes know that hidden objects can affect the orientation of other objects
    Josep Call
    Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, D 04103 Leipzig, Germany
    Cognition 105:1-25. 2007
    ..It is concluded that subjects made some inferences about the reason for the inclined orientation of the boards, and not simply associated an inclined orientation with the presence of the reward...
  2. doi request reprint Fission-fusion dynamics, behavioral flexibility, and inhibitory control in primates
    Federica Amici
    Research Centre in Evolutionary Anthropology and Palaeoecology, School of Biological and Earth Sciences, Liverpool John Moores University, James Parsons Building, Byrom Street, Liverpool L3 3AF, United Kingdom
    Curr Biol 18:1415-9. 2008
    ..These findings confirmed that enhanced inhibitory skills are positively associated with FF dynamics, more than to phylogenetic relations or feeding ecology...
  3. pmc Reaching around barriers: the performance of the great apes and 3-5-year-old children
    Petra H J M Vlamings
    Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, Leipzig, Germany
    Anim Cogn 13:273-85. 2010
    ..In general, the performance of the older children was far from perfect and comparable to some of the nonhuman apes tested...
  4. doi request reprint Does the chimpanzee have a theory of mind? 30 years later
    Josep Call
    Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, D 04103 Leipzig, Germany
    Trends Cogn Sci 12:187-92. 2008
    ..Our conclusion for the moment is, thus, that chimpanzees understand others in terms of a perception-goal psychology, as opposed to a full-fledged, human-like belief-desire psychology...
  5. ncbi request reprint Past and present challenges in theory of mind research in nonhuman primates
    Josep Call
    Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, D 04103 Leipzig, Germany
    Prog Brain Res 164:341-53. 2007
    ..Using tasks with a high ecological validity and mapping out key concepts such association and inference are postulated as fundamental steps to further advance our knowledge in this area...
  6. ncbi request reprint Inferences by exclusion in the great apes: the effect of age and species
    Josep Call
    Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103, Leipzig, Germany
    Anim Cogn 9:393-403. 2006
    ..Results suggested a positive relationship between age and inferential ability independent of memory ability but no species differences...
  7. doi request reprint Do apes know that they could be wrong?
    Josep Call
    Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
    Anim Cogn 13:689-700. 2010
    ..Taken together, these findings suggest that subjects knew that they could be wrong when choosing...
  8. ncbi request reprint Copying results and copying actions in the process of social learning: chimpanzees (Pan troglodytes) and human children (Homo sapiens)
    Josep Call
    Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103, Leipzig, Germany
    Anim Cogn 8:151-63. 2005
    ....
  9. ncbi request reprint 'Unwilling' versus 'unable': chimpanzees' understanding of human intentional action
    Josep Call
    Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
    Dev Sci 7:488-98. 2004
    ..experimenter These data together with other recent studies on chimpanzees' knowledge about others' visual perception show that chimpanzees know more about the intentional actions and perceptions of others than previously demonstrated..
  10. doi request reprint Monkeys and apes: are their cognitive skills really so different?
    Federica Amici
    Research Centre in Evolutionary Anthropology and Palaeoecology, School of Natural Sciences and Psychology, Liverpool John Moores University, Liverpool L3 3AF, UK
    Am J Phys Anthropol 143:188-97. 2010
    ..These findings evidence the importance of using multiple tasks across multiple species in a comparative perspective to test different explanations for the enhancement of specific cognitive skills...
  11. ncbi request reprint Inferences about the location of food in the great apes (Pan paniscus, Pan troglodytes, Gorilla gorilla, and Pongo pygmaeus)
    Josep Call
    Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
    J Comp Psychol 118:232-41. 2004
    ..It is concluded that subjects understood that the food caused the noise, not simply that the noise was associated with the food...
  12. ncbi request reprint Estimating and operating on discrete quantities in orangutans (Pongo pygmaeus)
    J Call
    Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
    J Comp Psychol 114:136-47. 2000
    ..This study suggests that orangutans use a representational mechanism (especially when comparing quantities) to select the larger of 2 sets of items...
  13. ncbi request reprint Object permanence in orangutans (Pongo pygmaeus), chimpanzees (Pan troglodytes), and children (Homo sapiens)
    J Call
    Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
    J Comp Psychol 115:159-71. 2001
    ..It is hypothesized that a response bias and inhibition problem were responsible for the poor performance in nonadjacent displacements...
  14. ncbi request reprint Domestic dogs (Canis familiaris) are sensitive to the attentional state of humans
    Josep Call
    Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
    J Comp Psychol 117:257-63. 2003
    ..Results are discussed in terms of domestic dogs' social-cognitive skills and their unique evolutionary and ontogenetic histories...
  15. ncbi request reprint A fish-eye lens for comparative studies: broadening the scope of animal cognition
    Josep Call
    Anim Cogn 5:15-6. 2002
  16. pmc Beyond learning fixed rules and social cues: abstraction in the social arena
    Joseph Call
    Max Plank Institute for Evolutionary Anthropology, Deutscher Platz 6, D 04103 Leipzig, Germany
    Philos Trans R Soc Lond B Biol Sci 358:1189-96. 2003
    ..Instead, I argue that social abstraction, in particular the development of concepts such as seeing in others, is key to explaining the behaviour of our closest relative in a variety of situations...
  17. ncbi request reprint Spatial rotations and transpositions in orangutans ( Pongo pygmaeus) and chimpanzees ( Pan troglodytes)
    Josep Call
    Max Planck Institute for Evolutionary Anthropology, Inselstrasse 22, 04103 Leipzig, Germany
    Primates 44:347-57. 2003
    ..This decrease was especially pronounced in rotational displacements. A language-trained orangutan outperformed all the other apes and solved all problems...
  18. doi request reprint The performance of bonobos (Pan paniscus), chimpanzees (Pan troglodytes), and orangutans (Pongo pygmaeus) in two versions of an object-choice task
    Nicholas J Mulcahy
    Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
    J Comp Psychol 123:304-9. 2009
    ..The authors suggest several possibilities to account for this difference and discuss our findings in relation to previous and future object-choice research...
  19. doi request reprint How the great apes (Pan troglodytes, Pongo pygmaeus, Pan paniscus, Gorilla gorilla) perform on the reversed reward contingency task II: transfer to new quantities, long-term retention, and the impact of quantity ratios
    Jana Uher
    Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
    J Comp Psychol 122:204-12. 2008
    ..Thus, some apes require no procedural modifications to overcome their strong bias for selecting the larger of 2 quantities...
  20. doi request reprint Tracking and inferring spatial rotation by children and great apes
    Sanae Okamoto-Barth
    Department of Developmental and Comparative Psychology, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
    Dev Psychol 44:1396-408. 2008
    ....
  21. doi request reprint Spider monkeys (Ateles geoffroyi) and capuchin monkeys (Cebus apella) follow gaze around barriers: evidence for perspective taking?
    Federica Amici
    Liverpool John Moores University, Max Planck Institute for Evolutionary Anthropology, CNR, and Research Group Behavioural Biology Liverpool, UK
    J Comp Psychol 123:368-74. 2009
    ..The authors conclude that both monkey species showed some indication of perspective-taking abilities, although the absence of "looking back" behavior suggests a potential difference from the abilities shown by the great apes...
  22. ncbi request reprint How the great apes (Pan troglodytes, Pongo pygmaeus, Pan paniscus, and Gorilla gorilla) perform on the reversed contingency task: the effects of food quantity and food visibility
    Petra H J M Vlamings
    Department of Developmental and Comparative Psychology, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
    J Exp Psychol Anim Behav Process 32:60-70. 2006
    ..Both quantity and visibility of the food items had a significant effect on performance. Subjects performed better when the disparity between quantities was smaller and the quantities were not directly visible...
  23. ncbi request reprint Great apes' understanding of other individuals' line of sight
    Sanae Okamoto-Barth
    Department of Developmental and Comparative Psychology, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
    Psychol Sci 18:462-8. 2007
    ..Great apes' perspective-taking skills seem to have increased in the evolutionary lineage leading to bonobos, chimpanzees, and humans...
  24. pmc Comparing dogs and great apes in their ability to visually track object transpositions
    Eveline F Rooijakkers
    Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, Leipzig, Germany
    Anim Cogn 12:789-96. 2009
    ..These results confirm the substantial difference that exists between great apes and dogs with regard to mental representation abilities required to track the invisible displacements of objects...
  25. doi request reprint Can chimpanzees (Pan troglodytes) discriminate appearance from reality?
    Carla Krachun
    Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
    Cognition 112:435-50. 2009
    ..5-year-olds passed. Our study constitutes the first direct investigation of appearance-reality understanding in chimpanzees and the first cross-species comparison of this capacity...
  26. ncbi request reprint The use of experimenter-given cues by South African fur seals (Arctocephalus pusillus)
    Marina Scheumann
    Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103 Leipzig, Germany
    Anim Cogn 7:224-30. 2004
    ..We also analyzed the behavior of the seals depending on the level of difficulty of the task. Behavioral signs of hesitation increased with task difficulty. This suggests that the fur seals were sensitive to task difficulty...
  27. doi request reprint Task constraints mask great apes' ability to solve the trap-table task
    Antje Girndt
    Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
    J Exp Psychol Anim Behav Process 34:54-62. 2008
    ..However, when they could instead choose where to insert a single tool, around 80% of the apes solved the trap-table task in the first trial, revealing an important effect of task constraints on their performance...
  28. doi request reprint A competitive nonverbal false belief task for children and apes
    Carla Krachun
    Department of Developmental and Comparative Psychology, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
    Dev Sci 12:521-35. 2009
    ....
  29. ncbi request reprint Apes save tools for future use
    Nicholas J Mulcahy
    Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, D 04103 Leipzig, Germany
    Science 312:1038-40. 2006
    ..These findings suggest that the precursor skills for planning for the future evolved in great apes before 14 million years ago, when all extant great ape species shared a common ancestor...
  30. doi request reprint Chimpanzees (Pan troglodytes) know what can be seen from where
    Carla Krachun
    Department of Developmental and Comparative Psychology, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103 Leipzig, Germany
    Anim Cogn 12:317-31. 2009
    ..Our study thus suggests that chimpanzees have good visual perspective taking abilities with regard to themselves as well as others, and that both likely reflect a more general knowledge, at least implicit, of what can be seen from where...
  31. doi request reprint Great apes' capacities to recognize relational similarity
    Daniel B M Haun
    Max Planck Institute for Evolutionary Anthropology, Research Group for Comparative Cognitive Anthropology, Deutscher Platz 6, 04103 Leipzig, Germany
    Cognition 110:147-59. 2009
    ..The lack of a capability for language does not prohibit recognition of simple relational similarities. The data are discussed in the light of the phylogenetic tree of relatedness of the great apes...
  32. doi request reprint Are apes inequity averse? New data on the token-exchange paradigm
    Juliane Bräuer
    Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, Leipzig, Germany
    Am J Primatol 71:175-81. 2009
    ..Thus, with an improved methodology we failed to reproduce the findings of Brosnan et al. [Proceedings of the Royal Society of London. Series B. Biological Sciences 272:253-258, 2005] that apes show inequity aversion...
  33. doi request reprint Orangutans (Pongo pygmaeus) and bonobos (Pan paniscus) point to inform a human about the location of a tool
    Felizitas Zimmermann
    Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103 Leipzig, Germany
    Anim Cogn 12:347-58. 2009
    ....
  34. doi request reprint Chimpanzees solve the trap problem when the confound of tool-use is removed
    Amanda M Seed
    Department of Experimental Psychology, University of Cambridge, UK
    J Exp Psychol Anim Behav Process 35:23-34. 2009
    ..With regard to what the chimpanzees had learned, the results support the notion that rather than using the available stimuli as arbitrary cues, the subjects had encoded information about functional properties...
  35. pmc Differences in the cognitive skills of bonobos and chimpanzees
    Esther Herrmann
    Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
    PLoS ONE 5:e12438. 2010
    ..These species differences support the role of ecological and socio-ecological pressures in shaping cognitive skills over relatively short periods of evolutionary time...
  36. pmc Ratcheting up the ratchet: on the evolution of cumulative culture
    Claudio Tennie
    Department of Developmental and Comparative Psychology, Max Planck Institute for Evolutionary Anthropology, 04103 Leipzig, Germany
    Philos Trans R Soc Lond B Biol Sci 364:2405-15. 2009
    ..Together, these unique processes of social learning and cooperation lead to humans' unique form of cumulative cultural evolution...
  37. doi request reprint The structure of individual differences in the cognitive abilities of children and chimpanzees
    Esther Herrmann
    Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
    Psychol Sci 21:102-10. 2010
    ....
  38. doi request reprint Great apes select tools on the basis of their rigidity
    Héctor Marín Manrique
    Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
    J Exp Psychol Anim Behav Process 36:409-22. 2010
    ..We conclude that great apes spontaneously selected unfamiliar rigid or flexible tools even after gathering minimal observational information...
  39. doi request reprint Two-year-old children copy more reliably and more often than nonhuman great apes in multiple observational learning tasks
    Claudio Tennie
    Department of Developmental and Comparative Psychology, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
    Primates 51:337-51. 2010
    ..We found first trial evidence for observational learning of actions, goals, and results in children. Some copying was found for apes as well, but only if their performance was averaged across trials...
  40. doi request reprint Do great apes use emotional expressions to infer desires?
    David Buttelmann
    Department of Developmental and Comparative Psychology, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
    Dev Sci 12:688-98. 2009
    ..These findings suggest that great apes understand both the directedness and the valence of some human emotional expressions, and can use this understanding to infer desires...
  41. doi request reprint Spontaneous use of tools as straws in great apes
    Héctor Marín Manrique
    Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103, Leipzig, Germany
    Anim Cogn 14:213-26. 2011
    ..After witnessing the experimenter blow bubbles or absorb liquid with a functional tool but fail to accomplish the same thing with the non-functional tool, orangutans failed to select the functional tool above chance levels...
  42. doi request reprint Domestic dogs comprehend human communication with iconic signs
    Juliane Kaminski
    Sub Department of Animal Behaviour, University of Cambridge, Madingley, Cambridge, UK
    Dev Sci 12:831-7. 2009
    ....
  43. doi request reprint Great apes track hidden objects after changes in the objects' position and in subject's orientation
    Anna Albiach-Serrano
    Department of Developmental and Comparative Psychology, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
    Am J Primatol 72:349-59. 2010
    ..Overall, apes performed above chance in all conditions, but chimpanzees outperformed the other species. This study reinforces the notion that the great apes use an allocentric spatial coding...
  44. pmc Design complexity in termite-fishing tools of chimpanzees (Pan troglodytes)
    Crickette Sanz
    Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103 Leipzig, Germany
    Biol Lett 5:293-6. 2009
    ..Based on these findings, we suggest that chimpanzees in the Congo Basin have developed an improved fishing probe design...
  45. ncbi request reprint Reliance on head versus eyes in the gaze following of great apes and human infants: the cooperative eye hypothesis
    Michael Tomasello
    Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, D 04103 Leipzig, Germany
    J Hum Evol 52:314-20. 2007
    ....
  46. ncbi request reprint How great apes perform on a modified trap-tube task
    Nicholas J Mulcahy
    Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103, Leipzig, Germany
    Anim Cogn 9:193-9. 2006
    ..These findings suggest that some great apes may have some causal knowledge about the trap-tube task. Their success, however, depended on whether they were allowed to choose certain tool-using actions...
  47. ncbi request reprint Making inferences about the location of hidden food: social dog, causal ape
    Juliane Bräuer
    Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
    J Comp Psychol 120:38-47. 2006
    ..This result is discussed in terms of apes' adaptations for complex, extractive foraging and dogs' adaptations, during the domestication process, for cooperative communication with humans...
  48. ncbi request reprint All great ape species follow gaze to distant locations and around barriers
    Juliane Bräuer
    Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
    J Comp Psychol 119:145-54. 2005
    ..These results support the hypothesis that great apes do not just orient to a target that another is oriented to, but they actually attempt to take the visual perspective of the other...
  49. ncbi request reprint What does an intermediate success rate mean? An analysis of a Piagetian liquid conservation task in the great apes
    Chikako Suda
    Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
    Cognition 99:53-71. 2006
    ..This indicates that an intermediate performance reflects the joint operation and potential conflict between two different cognitive strategies (identity and appearance) inherent to the Piagetian conservation task...
  50. ncbi request reprint Unwilling versus unable: infants' understanding of intentional action
    Tanya Behne
    Department of Developmental and Comparative Psychology, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, D 04103, Leipzig, Germany
    Dev Psychol 41:328-37. 2005
    ....
  51. ncbi request reprint Gorillas (Gorilla gorilla) and orangutans (Pongo pygmaeus) encode relevant problem features in a tool-using task
    Nicholas J Mulcahy
    Department of Developmental and Comparative Psychology, Max Planck Institute for Evolutionary Anthropology, D 04103 Leipzig, Germany
    J Comp Psychol 119:23-32. 2005
    ..Subjects were proficient at using tools in sequence to retrieve the reward...
  52. ncbi request reprint Piagetian liquid conservation in the great apes (Pan paniscus, Pan troglodytes, and Pongo pygmaeus)
    Chikako Suda
    Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
    J Comp Psychol 118:265-79. 2004
    ..The results suggest that the apes rely to a greater extent on visual information, although they might have some appreciation of the constancy of liquid quantities...
  53. ncbi request reprint The role of humans in the cognitive development of apes revisited
    Michael Tomasello
    Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103 Leipzig, Germany
    Anim Cogn 7:213-5. 2004
  54. ncbi request reprint Understanding "prior intentions" enables two-year-olds to imitatively learn a complex task
    Malinda Carpenter
    Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
    Child Dev 73:1431-41. 2002
    ..Children opened the box themselves more often in each of these three conditions than in the two No Prior Intention conditions, even though children in all five conditions saw the exact same demonstration of how to open the box...
  55. ncbi request reprint Chimpanzees (Pan troglodytes) conceal visual and auditory information from others
    Alicia P Melis
    Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
    J Comp Psychol 120:154-62. 2006
    ..These results suggest that chimpanzees can, in some circumstances, actively manipulate the visual and auditory perception of others by concealing information from them...
  56. pmc Are apes really inequity averse?
    Juliane Bräuer
    Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103 Leipzig, Germany
    Proc Biol Sci 273:3123-8. 2006
    ..The most plausible explanation for these results is the food expectation hypothesis - seeing another individual receive high-quality food creates the expectation of receiving the same food oneself - and not inequity aversion...
  57. ncbi request reprint Behavioral cues that great apes use to forage for hidden food
    David Buttelmann
    Department of Developmental and Comparative Psychology, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103 Leipzig, Germany
    Anim Cogn 11:117-28. 2008
    ..Thus, great apes were able to use a variety of experimenter-given cues associated with foraging actions to locate hidden food and thereby were partially sensitive to the general purpose underlying these actions...
  58. doi request reprint Rational tool use and tool choice in human infants and great apes
    David Buttelmann
    Department of Developmental and Comparative Psychology, Max Planck Institute for Evolutionary Anthropology, D 04103 Leipzig, Germany
    Child Dev 79:609-26. 2008
    ..Only some apes thus show an understanding of others' intentions as rational choices of action plans...
  59. doi request reprint Chimpanzees infer the location of a reward on the basis of the effect of its weight
    Daniel Hanus
    Department of Developmental and Comparative Psychology, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
    Curr Biol 18:R370-2. 2008
  60. doi request reprint An experimental study of nettle feeding in captive gorillas
    Claudio Tennie
    Department of Comparative Psychology, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
    Am J Primatol 70:584-93. 2008
    ..e. single actions) of this complex skill may be owing to social learning, at the program level gorilla nettle feeding derives mostly from genetic predispositions and individual learning of plant affordances...
  61. ncbi request reprint Chimpanzees are rational maximizers in an ultimatum game
    Keith Jensen
    Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, D 04103, Leipzig, Germany
    Science 318:107-9. 2007
    ..These results support the hypothesis that other-regarding preferences and aversion to inequitable outcomes, which play key roles in human social organization, distinguish us from our closest living relatives...
  62. ncbi request reprint Humans have evolved specialized skills of social cognition: the cultural intelligence hypothesis
    Esther Herrmann
    Max Planck Institute for Evolutionary Anthropology, Leipzig, D 04103, Germany
    Science 317:1360-6. 2007
    ....
  63. ncbi request reprint Discrete quantity judgments in the great apes (Pan paniscus, Pan troglodytes, Gorilla gorilla, Pongo pygmaeus): the effect of presenting whole sets versus item-by-item
    Daniel Hanus
    Department of Developmental and Comparative Psychology, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
    J Comp Psychol 121:241-9. 2007
    ..The authors conclude that quantity-based judgments rely on an analogical system, not a discrete object file model or perceptual estimation mechanism, such as subitizing...
  64. pmc Chimpanzees do not take into account what others can hear in a competitive situation
    Juliane Bräuer
    Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103 Leipzig, Germany
    Anim Cogn 11:175-8. 2008
    ..Results suggested that the chimpanzees did not take what the competitor had heard into account, despite being able to locate the hiding place themselves by the noise...
  65. ncbi request reprint Enculturated chimpanzees imitate rationally
    David Buttelmann
    Department of Developmental and Comparative Psychology, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, D 04103 Leipzig, Germany
    Dev Sci 10:F31-8. 2007
    ..Enculturated chimpanzees thus have some understanding of the rationality of others' intentional actions, and use this understanding when imitating others...
  66. ncbi request reprint Ape metaphysics: object individuation without language
    Natacha Mendes
    Max Planck Institute for Evolutionary Anthropology, Department of Developmental and Comparative Psychology, Deutscher Platz 6, D 04103, Leipzig, Germany
    Cognition 106:730-49. 2008
    ..It remains to be seen, however, whether this kind of object individuation requires sortal concepts as human linguistic thinkers use them, or whether some simpler form of tracking properties is sufficient...
  67. pmc Chimpanzees know that others make inferences
    Martin Schmelz
    Department of Developmental and Comparative Psychology, Max Planck Institute for Evolutionary Anthropology, D 04103 Leipzig, Germany
    Proc Natl Acad Sci U S A 108:3077-9. 2011
    ..Chimpanzees can determine the inferences that a conspecific is likely to make and then adjust their competitive strategies accordingly...