Publikationen
Die Feldstudien auf Chimfunshi haben zu zahlreichen wissenschaftlichen Publikationen geführt, von denen Sie hier eine Auswahl finden:
Bonobos and Chimpanzees Overlap in Sexual Behaviors During Social Tension
Authors: Brooker Jake S., Webb Christine E., van Leeuwen Edwin J. C., Kordon Stephanie, de Waal Frans B. M. and Clay Zanna (2025)
Examining sexual behavior in bonobos and chimpanzees, including those at Chimfunshi Wildlife Orphanage, this study finds that both species engage in similar sociosexual interactions during periods of social tension. These findings challenge strict dichotomies between bonobo and chimpanzee social behaviors and suggest that sexual interactions may serve comparable social functions in both species.
Grooming and Play Contagion in Chimpanzees
Authors: Sandars G, Brooker JS, Clay Z (2024)
This study shows that grooming and play behaviors in chimpanzees at Chimfunshi Wildlife Orphanage spread contagiously through social interactions, meaning that observing one individual engage in a behavior increases the likelihood of others doing the same. The findings suggest that emotional and social contagion play a significant role in shaping primate social dynamics.
Chimpanzees Use Social Information to Learn Skills They Fail to Innovate
Authors: van Leeuwen, E.J.C., DeTroy, S.E., Haun, D.B.M., and Call, J. (2024)
This study demonstrates that chimpanzees at Chimfunshi Wildlife Orphanage can acquire a new foraging skill when exposed to social information but fail to innovate the skill independently. The findings emphasize the importance of social learning in cultural transmission and suggest that chimpanzees rely heavily on observation rather than individual trial-and-error innovation.
Chimpanzee Communities Differ in Their Social
Authors: Rawlings, B.S., van Leeuwen, E.J.C., and Davila-Ross, M. (2023)
This study examines differences in social relationships between males and females across chimpanzee communities at Chimfunshi Wildlife Orphanage. It finds that both inter- and intrasexual social interactions vary by group, highlighting how social structure and environmental factors influence the nature of chimpanzee relationships.
Biased Cultural Transmission of a Social Custom in Chimpanzees
Authors: van Leeuwen, E.J.C., and Hoppitt, W. (2023)
Investigating cultural transmission in chimpanzees at Chimfunshi Wildlife Orphanage, this study shows that social customs do not spread randomly but are instead influenced by biases in who individuals learn from. Dominant or socially central individuals play a key role in maintaining and spreading traditions, similar to human cultural transmission patterns.
Chimpanzees Communicate to Coordinate a Cultural Practice
Authors: Goldsborough, Z., Schel, A.M., and van Leeuwen, E.J.C. (2023)
This study provides evidence that chimpanzees at Chimfunshi Wildlife Orphanage actively use communication to coordinate a shared cultural behavior. The findings highlight the role of vocal and gestural signals in facilitating socially learned behaviors, reinforcing the idea that chimpanzees use communication to maintain cultural traditions.
Co-Feeding Tolerance in Bonobos and Chimpanzees
Authors: Leeuwen, E.J.C. van, Staes, N., Brooker, J.S., Kordon, S., Nolte, S., Clay, Z., Eens, M., and Stevens, J.M.G. (2023)
Challenging the traditional view that bonobos are universally more tolerant than chimpanzees, this study finds that co-feeding tolerance varies significantly across groups within both species, including at Chimfunshi Wildlife Orphanage. The results suggest that tolerance is not an inherent species-wide trait but instead influenced by local social and ecological factors.
Early Trauma and Social Behavior in Chimpanzees
Authors: van Leeuwen, E.J.C., Bruinstroop, B.M.C., and Haun, D.B.M. (2022)
This study examines whether chimpanzees at Chimfunshi Wildlife Orphanage who experienced early-life trauma exhibit lasting social deficits in adulthood. The results indicate no significant long-term effects on their ability to form and maintain social bonds, suggesting resilience in their social development despite early adversity.
Chimpanzee Social Networks Resemble Human Relationship Structures
Authors: Escribano, D., Doldán-Martelli, V., Cronin, K.A., Haun, D.B.M., van Leeuwen, E.J.C., Cuesta, J.A., and Sánchez, A. (2022)
Using social network analysis, this study shows that chimpanzee social structures at Chimfunshi Wildlife Orphanage exhibit modular and hierarchical organization similar to human social networks. Chimpanzees form strong, selective bonds within their groups while maintaining indirect connections, suggesting parallels in how primates, including humans, structure their social lives.
Great ape communication as contextual social inference: a computational modelling perspective
Bohn, M., Liebal, K., Oña, L., & Tessler, M. H. (2022)
Group-Specific Prosocial Behavior in Chimpanzees
Authors: van Leeuwen, E.J.C., DeTroy, S.E., Kaufhold, S.P., Dubois, C., Schütte, S., Call, J., and Haun, D.B.M. (2021)
This study finds that prosocial behaviors, such as food sharing and cooperative interactions, differ between chimpanzee groups at Chimfunshi Wildlife Orphanage, indicating that prosociality is not a uniform species trait but rather shaped by social norms within communities. The findings support the view that chimpanzees develop group-specific cultures, which influence their cooperative tendencies.
Fellatio Among Male Chimpanzees During Social Tension
Authors: Brooker, J. S., Webb, C. E., & Clay, Z. (2021)
Observing male chimpanzees at Chimfunshi Wildlife Orphanage, this study documents instances of fellatio occurring during periods of social tension. The findings suggest that such sexual behaviors may serve as a tension-regulating mechanism, akin to sociosexual behaviors seen in bonobos, providing new insights into the role of sexual interactions in chimpanzee social dynamics.
Temporal Stability of Chimpanzee Social Culture
Author: van Leeuwen, E.J.C. (2021)
By analyzing long-term behavioral data from Chimfunshi Wildlife Orphanage, this study finds that social behaviors, specifically the grooming handclasp styles, within chimpanzee communities remain stable over time, supporting the idea that social culture is maintained across generations. The findings suggest that social learning plays a key role in cultural continuity, providing further evidence for the persistence of behavioral traditions in primates.
Behavioral Flexibility, Social Tolerance, and Tool Use
Authors: Harrison, R.A., van Leeuwen, E.J.C., and Whiten, A. (2021)
This study explores how chimpanzees at Chimfunshi Wildlife Orphanage solve a progressively complex foraging problem that requires tool-composite use. It finds that their ability to adapt depends on a combination of behavioral flexibility and social tolerance. Chimpanzees that are more socially tolerant are better at solving the task, demonstrating that both cognitive and social factors influence innovation and problem-solving.
Cofeeding Tolerance and Group Composition
Authors: DeTroy, S.E., Ross, C.T., Cronin, K.A., van Leeuwen, E.J.C., and Haun, D.B.M. (2021)
Examining four chimpanzee communities at Chimfunshi Wildlife Orphanage over time, this longitudinal study finds that co-feeding tolerance varies significantly based on group composition rather than being a fixed species trait. The study highlights how individual social relationships and group dynamics shape feeding interactions, reinforcing the importance of social structure in primate cooperation.
Group-Level Variation in Co-Feeding Tolerance
Authors: Leeuwen, E.J.C. van, Donink, S.V., Eens, M., and Stevens, J.M.G. (2021)
This study investigates co-feeding tolerance in two communities of chimpanzees housed at Chimfunshi Wildlife Orphanage, revealing significant group-level differences in how individuals tolerate others at feeding sites. The findings challenge species-wide generalizations about social tolerance in chimpanzees and suggest that local social environments play a crucial role in shaping feeding behavior.
A stepping stone to compositionality in chimpanzee communication
Authors: Linda S. Oña, Wendy Sandler, Katja Liebal, 2019
Spontaneous Social Tool Use in Chimpanzees
Authors: Manon K. Schweinfurth, Sarah E. DeTroy, Edwin J. C. van Leeuwen, Josep Call, Daniel B. M. Haun, 2018
Population-specific social dynamics in chimpanzees
Authors: Edwin J. C. van Leeuwen, Katherine A. Cronin, Daniel B. M. Haun, 2018
Chimpanzee culture extends beyond matrilineal family units
Authors: Edwin J.C. van Leeuwen, Roger Mundry, Katherine A. Cronin, Mark Bodamer, Daniel B.M. Haun, 2017
Tool use for corpse cleaning in Chimpanzees
Authors: Edwin J. C. van Leeuwen, Katherine A. Cronin, Daniel B. M. Haun, 2017
An Analysis of Bimanual Actions in Natural Feeding of Semi-Wild Chimpanzees
Authors: Gillian S. Forrester, Bruce Rawlings and Marina Davila-Ross, 2016
Chimpanzees’ Responses to the Dead Body of a 9-Year-Old Group Member
Authors: Edwin J.C. van Leeuwen, Innocent Chitalu Mulenga, Mark D. Bodamer, Katherine A. Cronin, 2016
Development of a cognitive bias methodology for measuring low mood in chimpanzees
Authors: Melissa Bateson and Daniel Nettle, 2015
Bonobos Show Limited Social Tolerance in a Group – Setting: A Comparison with Chimpanzees and a Test of the Relational Model
Authors: Katherine A. Cronin, Evelien De Groot, Jeroen M.G. Stevens, 2015
Chimpanzees Produce the Same Types of ‘Laugh Faces’ when They Emit Laughter and when They Are Silent
Authors: Marina Davila-Ross, Goncalo Jesus, Jade Osborne, Kim A. Bard, 2015
Population-level variability in the social climates of four chimpanzee societies
Authors: Katherine A. Cronin, Edwin J.C. van Leeuwen, Vivian Vreeman, Daniel B.M. Haun, 2014
Semi-wild chimpanzees open hard-shelled fruits differently across communities
Authors: Bruce Rawlings, Marina Davila-Ross, Sarah T. Boysen, 2014
A group-specific arbitrary tradition in chimpanzees
Authors: Edwin J. C. van Leeuwen, Katherine A. Cronin, Daniel B. M. Haun, 2014
Problem solving in the presence of others: How rank and relationship quality impact resource acquisition in chimpanzees (Pan troglodytes).
Authors: Cronin, K. A., Pieper, B., Van Leeuwen, E. J. C., Mundry, R., & Haun, D. B. M. 2014
Early social deprivation negatively affects social skill acquisition in chimpanzees (Pan troglodytes).
Authors: Van Leeuwen, E. J. C., Chitalu Mulenga, I., & Lisensky Chidester, D. 2014
Responses of chimpanzees to cues of conspecific observation.
Authors: Nettle, D., Cronin, K. A., & Bateson, M. 2013
Chimpanzees flexibly adjust their behaviour in order to maximize payoffs, not to conform to majorities.
Authors: Van Leeuwen, E. J. C., Cronin, K. A., Schütte, S., Call, J., & Haun, D. B. M. 2013
Neighbouring chimpanzee communities show different preferences in social grooming behaviour.
Authors: Van Leeuwen, E. J. C., Cronin, K. A., Haun, D. B. M., Mundry, R., & Bodamer, M. D. 2012
Behavioral response of a chimpanzee mother toward her dead infant.
Authors: Cronin, K. A., Van Leeuwen, E. J. C., Mulenga, I. C., & Bodamer, M. D. 2011
