Search Results - "DE WAAL, FRANS B.M"

Towards a bottom-up perspective on animal and human cognition by de Waal, Frans B.M, Ferrari, Pier Francesco

“…Over the last few decades, comparative cognitive research has focused on the pinnacles of mental evolution, asking all-or-nothing questions such as which…”
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The Chimpanzee's service economy: Food for grooming by de Waal, Frans B.M

“…Evidence is presented that the reciprocal exchange of social services among chimpanzees ( Pan troglodytes) rests on cognitive abilities that allow current…”
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Coalitions in theory and reality: a review of pertinent variables and processes by Bissonnette, Annie, Perry, Susan, Barrett, Louise, Mitani, John C, Flinn, Mark, Gavrilets, Sergey, de Waal, Frans B.M

“…Coalitions and alliances are ubiquitous in humans and many other mammals, being part of the fabric of complex social systems. Field biologists and ethologists…”
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Sex and strife: post-conflict sexual contacts in bonobos by Clay, Zanna, de Waal, Frans B.M

“…Sexual contacts are thought to play an important role in regulating social tension in bonobos (Pan paniscus), and are especially common following aggressive…”
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Asian elephants (Elephas maximus) reassure others in distress by Plotnik, Joshua M, de Waal, Frans B M

“…Contact directed by uninvolved bystanders toward others in distress, often termed consolation, is uncommon in the animal kingdom, thus far only demonstrated in…”
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Ape duos and trios: spontaneous cooperation with free partner choice in chimpanzees by Suchak, Malini, Eppley, Timothy M, Campbell, Matthew W, de Waal, Frans B M

“…The purpose of the present study was to push the boundaries of cooperation among captive chimpanzees (Pan troglodytes). There has been doubt about the level of…”
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Spread of arbitrary conventions among chimpanzees: a controlled experiment by Bonnie, Kristin E, Horner, Victoria, Whiten, Andrew, de Waal, Frans B.M

“…Wild chimpanzees (…”
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Competing demands of prosociality and equity in monkeys by Brosnan, Sarah F, Houser, Daniel, Leimgruber, Kristin, Xiao, Erte, Chen, Tianwen, de Waal, Frans B.M

“…Abstract Prosocial decisions may lead to unequal payoffs among group members. Although an aversion to inequity has been found in empirical studies of both…”
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Capuchin cognitive ecology: cooperation based on projected returns by de Waal, Frans B.M, Davis, Jason M

“…Stable cooperation requires that each party’s pay-offs exceed those available through individual action. The present experimental study on brown capuchin…”
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Elephants know when they need a helping trunk in a cooperative task by Plotnik, Joshua M, Lair, Richard, Suphachoksahakun, Wirot, de Waal, Frans B.M

“…Elephants are widely assumed to be among the most cognitively advanced animals, even though systematic evidence is lacking. This void in knowledge is mainly…”
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Partner effects on food consumption in brown capuchin monkeys by Dindo, Marietta, De Waal, Frans B.M.

“…It has been claimed that capuchin monkeys (Cebus apella) show inequity aversion in relation to food rewards for a simple exchange task. However, other factors…”
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What is an animal emotion? by de Waal, Frans B.M.

“…Emotions suffuse much of the language employed by students of animal behavior—from “social bonding” to “alarm calls”— yet are carefully avoided as an explicit…”
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Postconflict third-party affiliation in stumptailed macaques by Call, Josep, Aureli, Filippo, de Waal, Frans B.M

“…Stumptailed macaques, Macaca arctoides, are characterized by high levels of postconflict affiliative contacts between opponents. We investigated the occurrence…”
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Ape gestures and language evolution by Pollick, Amy S, de Waal, Frans B.M

“…The natural communication of apes may hold clues about language origins, especially because apes frequently gesture with limbs and hands, a mode of…”
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Giving is self-rewarding for monkeys by de Waal, Frans B.M, Leimgruber, Kristin, Greenberg, Amanda R

“…Helping and sharing among humans is often motivated by empathy and accompanied by a sense of satisfaction. To determine whether similar self-rewarding…”
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Natural normativity: The 'is' and 'ought' of animal behavior by de Waal, Frans B.M

“…The evolution of behavior is sometimes considered irrelevant to the issue of human morality, since it lacks the normative character of morality ('ought'), and…”
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Transmission of Multiple Traditions within and between Chimpanzee Groups by Whiten, Andrew, Spiteri, Antoine, Horner, Victoria, Bonnie, Kristin E., Lambeth, Susan P., Schapiro, Steven J., de Waal, Frans B.M.

“…Field reports provide increasing evidence for local behavioral traditions among fish, birds, and mammals [1–7]. These findings are significant for evolutionary…”
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A concept of value during experimental exchange in brown capuchin monkeys, Cebus apella by Brosnan, Sarah F, de Waal, Frans B M

“…We evaluated the response of brown capuchin monkeys to two differentially valued tokens in an experimental exchange situation akin to a simple barter. Monkeys…”
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Inequity responses of monkeys modified by effort by van Wolkenten, Megan, Brosnan, Sarah F, de Waal, Frans B.M

“…Without joint benefits, joint actions could never have evolved. Cooperative animals need to monitor closely how large a share they receive relative to their…”
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Monkeys recognize the faces of group mates in photographs by Pokorny, Jennifer J, de Waal, Frans B.M

“…Nonhuman primates posses a highly developed capacity for face recognition, which resembles the human capacity both cognitively and neurologically. Face…”
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