In lieu of an abstract, here is a brief excerpt of the content:Report on the Thirtieth Annual Conference of the Japan Society for Buddhist-Christian StudiesYagi YōichiTranslated by Paul L. SwansonIn Japan, the disasters of the giant tsunami and the resulting crisis at the Fukushima nuclear power plant on 11 March 2011 have been grim reminders of the unprecedented tragedies of the nuclear bombings on Hiroshima and Nagasaki just sixty-six years ago. These are experiences in which one becomes speechless, when words (...) are no longer able to convey what used to be their usual meaning.At that time, people were faced with basic and universal questions concerning the fundamental constitution of human existence. What is the ultimate basis for our thoughts and actions? Is there a way to know? If there is a way to know these answers, how do we attain them? The state of intellectual inquiry in postwar Japan, however, was not able to face these questions and come up with answers. Rather, there was a tendency to avoid facing these questions directly and instead rely on absorbing the pronouncements of Western thought.Within this postwar intellectual environment in Japan, the Japan Society for Buddhist- Christian Studies has continuously attempted in an academic way to discuss comprehensive themes, based on Buddhist-Christian or Christian-Buddhist foundations, and is perhaps the only forum in Japan that has consistently sought answers to these basic and universal questions of human existence.It was in this time of crisis that the thirtieth annual conference of the Japan Society for Buddhist-Christian Studies met 5-7 September 2011 at Hanazono University in Kyoto. Discussion of a recent book, Dialogue and Commentary: The Words of Jesus and the Words of Zen (対談評釈 イエスの言葉／ 禅の言葉, Iwanami Shoten, 2010, in Japanese), a series of dialogues and discussions between Ueda Shizuteru and Yagi Seiichi, was chosen as an appropriate theme for this meeting. This book was chosen because it is a splendid synthesis of the activity and discussion carried out by our Society over the past thirty years. Through the magnificent dialogue of these two men, we hoped to open a "living horizon" for a mutual understanding of "the words of Jesus and the words of Zen." The main themes were "direct experience," "self-awareness," "place," and "words."The two dialoguers—Ueda and Yagi—have not only both served and provided [End Page 139] leadership for the Society over many years, as presidents and in other capacities, but also share a basic sense of fundamental questions. They are also leading philosophers of religion who represent the attempt to seek answers to fundamental questions within Buddhism and Christianity in postwar Japan. Ueda Shizuteru, a leading authority and internationally recognized scholar of Meister Eckhart, is also known for his contributions on the philosophy of religion (especially the idea of "place"/basho) in the tradition of Nishida Kitarō, Nishitani Keiji, and Zen Buddhism. His basic philosophical statement is "I am I when I am not I." Yagi Seiichi, on the other hand, is known for promoting religion (philosophy) as "a logic of place" as seen in the New Testament, and for his historical and essentialist critique of New Testament thought. To Yagi, the essence of "the religion of Jesus" is religion as a "logic of place," and if we return to this place we can (to borrow the exquisite phrasing of Yagi himself) "drink directly from the same fountain that was discovered by Jesus." Through this experience we can transcend not only biblical fundamentalism and the exclusivist absolutism of Christianity, but also make it possible to have a true dialogue with other religions. For Yagi, the dialogue between Buddhism and Christianity not only should deepen common understanding, but also open the way to mutual reform, clarify the truth that flows at the basis of both religions, and probe into the fundamental constitution of human existence, and this is why he has constantly sought after dialogue with Buddhists.Yagi Seiichi has stood out as a partner in dialogue for many years. His discussions with the Zen master Hisamatsu Shin'ichi (A Religion of Awakening, published in 1980) was an epochal event in intellectual history from the perspective of "Buddhism and Christianity." Yagi has also been involved in important dialogues with Nishitani... (shrink)

In lowland South America, breath animates human and non-human bodies, pulsating through the materialities of organisms. Humans, however, should manage their bodies to recast and reconfigure breath in its most life-enhancing manifestations: singing and smoking. These are the specialized domains of those able to manage their vitalities in such a way as to produce potent effects in themselves and in the world around them, including influencing atmospheric conditions, the lives of animals and plants and the harming and healing of others. (...) In these relational onto-epistemologies, intersubjectivity, intercorporality and states of non-cognitive interaffection find new depths. Breath, properly managed, can make and unmake worldly forms, including bodies and the societies they come together in. Focusing on two Amerindian communities, the Warekena of northwestern Rio Negro, Brazil and the Shipibo-Konibo of the Ucayali valley in Eastern Peru, this article examines the interface between human and non-human subjectivities, and how resonant interaffective atmospheric conditions are induced to promote health. (shrink)

Martin Heidegger’s understanding of art and Paul Ricoeur’s reading of the poetics of existence, developed through his hermeneutics of symbols, metaphor and narrative, open an immense vista to a theological thinking that desires to place primacy on the hearing of the symbolic language of poetry and literature. Beginning a few decades ago, various theologians have ventured along this trajectory, but theology still remains under the dominion of “theoria” and “praxis” and is not very open to “poiesis”. The study presented here (...) revisits the book of J.-P. Manigne on the Poetics of Faith from the 1970s, and the doctoral thesis of A. Thomasset on the Poetics of Morality, from the 1990s, showing how poetic reason provoked theological discourse in the second half of the 20th century. It is part of a research still in progress, devoted to other contributions of the beginning of the 21st century. (shrink)

This article conducts a decision theoretic analysis of the effect of dual candidacy on voting decisions in the Japanese variant of the mixed electoral system, where each candidate can run in both a single-member district (SMD) and a proportional representation (PR) block, and dual candidates can be ranked either individually or equally in parties' PR lists: their post-election ranking is determined by their SMD votes. The model shows that dual candidacy differentiates the mixed system from merely the simultaneous use of (...) the SMD and PR systems. That is, if an SMD candidate also runs in the PR block, it lowers voters' utility increment obtained by casting their SMD votes for him. If he is ranked equally in the PR list, however, SMD votes for him may help him win a PR seat against other equally ranked dual candidates, which enables dual candidacy accompanied by equal ranking to attract more SMD votes. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Bayle, Saint-Evremond, and Fideism:A Reply to Thomas M. LennonGianluca MoriIn a recent article published in this journal Thomas M. Lennon returns to the controversial question of Bayle's attitude towards religion. The point he debates is the particular use that, in expounding his conception of the relationship between faith and reason, Bayle makes of a passage from Saint-Evremond. In Lennon's view the correct interpretation of this point would show that (...) Bayle's fideism is to be "taken at face value" without any hint of irony and with no suspicion of dissimulation or insincerity.1 This would cast doubt on and greatly weaken the interpretation I proposed in my Bayle philosophe.2 My aim here is to respond briefly to Lennon's arguments and to clarify even more briefly what in my opinion is the right perspective in which to consider Bayle's position on this topic.The context in which Bayle quotes Saint-Evremond is to be found in the Eclaircissements he added to the second edition of his Dictionnaire historique et critique (1702) to counter the Dutch religious authorities' harsh criticism of the first edition. In particular the Walloon Consistory accused Bayle of taking a skeptical position that undermined the most important dogmas of Christian faith. In response Bayle wrote the Eclaircissement sur les Pyrrhoniens, a clumsy mosaic of quotations from the Scriptures and from patristic and profane texts, with which he sought to show that his skeptical fideism was not in the least heterodox but indeed the position that most closely reflected true Christianity. The quotation from Saint-Evremond, almost at the end of this text, is taken [End Page 323] from the Conversation du Maréchal d'Hocquincourt et du Père Canaye (written in about 1654).3 The final passage gives a clear idea of the general tone: after having disputed with a churchman the need to subject one's intellect to the yoke of faith, the marshal concludes by saying that he is ready to be crucified "without knowing why." Father Canaye replies: "No reason! That is the true religion. No reason! God has granted you a fine grace, mylord." So, and here Lennon obviously agrees (229), Saint-Evremond's is a text with no shadow of mystical inspiration, indeed strongly tending in the libertine direction, as is clear from the blatant way it pours scorn on the fideist approach.In my interpretation Bayle's use of this quotation does not at all demonstrate his atheism or unbelief, for in my view that question is undecidable. However, the quotation from Saint-Evremond is sufficient—and this is the onlyreason I mentioned it4 —to show that Bayle's approach to fideism is in no way innocent and naive as is sometimes claimed. On the contrary, his texts on this subject contain what amounts to provocations aimed at orthodox readers (to which they immediately reacted). This, together with other more important reasons, leads me to believe that Bayle's professions of Christian faith, though frequent, are generally far from being above suspicion: indeed, almost every line of them raises questions about their actual significance.The provocation contained in the quotation from Saint-Evremond appears in all its rhetorical weight if we associate this text with three other passages from Bayle's works. The first is from the Nouvelles de la république des lettres of December 1686, in which Bayle stresses the unedifying nature of the religious maxims contained in Saint-Evremond's Conversation (which, incidentally, he himself had just had printed in the collection Le Retour des pièces choisies).5 The second is taken from a letter by Jean d'Oulès to Bayle, written in 1696, in which the author deals with exactly the same passage from the Conversation that was later to be reproduced in the Eclaircissement. In this letter d'Oulès quotes the full passage which he considers to be a "naughty text" deliberately written to throw ridicule on the fanatical fideism of Pierre Jurieu.6 The third passage is from Bayle's Continuation des pensées diverses of 1704 in which, shortly after the death of Saint-Evremond, he publicly reveals the poet... (shrink)

Something should be done for a better global environment as soon as possible. This paper investigates the direction of management of the global environment and proposes new, concrete ideas for it.

In lieu of an abstract, here is a brief excerpt of the content:A Short ReplyGianluca MoriWhile thanking Thomas Lennon for the interest he has shown in my work—and without going into details of interpretation which cannot bear discussion in this context—I would like to make a few remarks on factual questions raised by his response.1) Lennon's text (p. 338): "The text that Bayle and Mori erroneously take to be Saint-Evremond's is in fact from Jean-François Sarasin."While it is not certain that (...) Bayle and I "erroneously" take this text to be Saint-Evremond's, it is certain that Lennon erroneously takes it to be Sarasin's. In fact, the text quoted by Bayle is not taken from Sarasin's Discours sur Epicure, but, as Bayle explicitly points out ("Xénophanes," K, note 124), from a "Discours des ennuis et des déplaisirs." This "Discours" is chapter 5 of De l'usage de la vie, a text published in many editions of Saint-Evremond's works (see the Barbin 1692 in-4° ed., Seconde Partie, p. 326). The paternity of De l'usage de la vie is doubtful and controversial, but it possibly contains some passages taken from Saint-Evremond's unpublished manuscripts, especially in chapters 3-6, as reported by an important source quoted by Ternois in Saint-Evremond, Œuvres en prose, IV, 3-4, note 1.2) Lennon's text (pp. 338-39): "The significance of two of the other texts advanced by Mori is fully vitiated, for in them Bayle makes the same mistake."In my article, I did not fail to state that these texts (OD I, 158 and Dict., "Epicure," M) are taken from an apocryphal source. On page 329 I wrote: "[Bayle] mistakenly attributes to [Saint-Evremond] a text on Epicurus's morals [i.e., Sarasin's Discours] included in that volume." However, it was absolutely impossible, for seventeenth-century readers, to distinguish between Saint-Evremond's original and apocryphal texts: the author himself—as is widely known—did not want to clarify this point (with a few exceptions, including the Saint-Evremoniana, which, as we have seen, Bayle never attributed to Saint-Evremond). [End Page 343] And this is true for all editions: there is no significant difference between genuine and pirated editions, since no official edition, authorized and revised by the author, existed before Des Maizeaux's posthumous one. From this point of view, virtually nobody (before 1705) could "study" Saint-Evremond's texts. (On this connection it should be added that I never claimed that Bayle "studied" Saint-Evremond, but only that he read his available works and made up his mind on them, and particularly on the Conversation du Maréchal d'Hocquincourt—which should be at the core of the present debate—long before reading Cotolendi).3) Lennon's text (p. 336): "As Mori acknowledges elsewhere, Labrousse thinks Le Vassor was a left-wing Anglican who failed to understand Bayle's calvinist perspective."Concerning Le Vassor, I "acknowledge" Labrousse's opinion only to reject it with a detailed argument (Bayle philosophe, 262, note 341).Gianluca MoriUniversità del Piemonte OrientaleCopyright © 2004 The Journal of the History of Ideas, Inc.... (shrink)

São muitas as abordagens do fenômeno religioso surgidas nos últimos dois séculos. Algumas recorrem aos métodos elaborados pelas ciências humanas, sobretudo a historiografia, a sociologia, a etnologia/antropologia, a psicologia e a fenomenologia. Outras tratam a religião numa perspectiva filosófica, como se pode ver nos grandes autores que, sobretudo a partir do século XIX, se consagraram à elaboração de uma filosofia da religião. Nas últimas décadas, com a renovação da filosofia hermenêutica, novas leituras da religião têm surgido, renovando profundamente esse campo (...) do saber. O texto aqui proposto apresenta alguns elementos da grande síntese do filósofo luxemburguês Jean Greisch, pouco conhecido no Brasil, mas cuja contribuição ao estudo da religião é original, privilegiando uma hermenêutica da passagem. Após uma breve apresentação de sua obra consagrada à filosofia da religião, serão apresentados os cinco “paradigmas” dos estudos da religião segundo ele: o especulativo, o crítico, o fenomenológico, o analítico e o hermenêutico, o último seguido pelo próprio autor. (shrink)

Seit einiger Zeit mehren sich in der Fichte-Forschung die Versuche, Fichtes Philosophie aus ihrer Interpretation durch Hegel herauszulösen und damit ihre Eigenständigkeit neu sichtbar zu machen. Dabei wird u.a. die Auffassung vertreten, Hegel habe Fichte falsch oder zumindest einseitig verstanden, wenn er in seiner Differenzschrift oder in Glauben und Wissen dessen Philosophie als »Reflexionsphilosophie« oder »formalen Idealismus« bezeichnet. Dagegen gibt es Stimmen, die Hegels Interpretation Fichtes als gerechtfertigt verteidigen. Diese Diskussion verweist nicht nur auf Defizite in den philosophischen Theorien von (...) Fichte und Hegel, die nicht geleugnet werden können, sondern mehr noch darauf, dass es in den Standpunkten beider erhebliche Unterschiede gibt, die zunächst herausgearbeitet und bedacht werden müssen. (shrink)

Seit einiger Zeit mehren sich in der Fichte-Forschung die Versuche, Fichtes Philosophie aus ihrer Interpretation durch Hegel herauszulösen und damit ihre Eigenständigkeit neu sichtbar zu machen. Dabei wird u.a. die Auffassung vertreten, Hegel habe Fichte falsch oder zumindest einseitig verstanden, wenn er in seiner Differenzschrift oder in Glauben und Wissen dessen Philosophie als »Reflexionsphilosophie« oder »formalen Idealismus« bezeichnet. Dagegen gibt es Stimmen, die Hegels Interpretation Fichtes als gerechtfertigt verteidigen. Diese Diskussion verweist nicht nur auf Defizite in den philosophischen Theorien von (...) Fichte und Hegel, die nicht geleugnet werden können, sondern mehr noch darauf, dass es in den Standpunkten beider erhebliche Unterschiede gibt, die zunächst herausgearbeitet und bedacht werden müssen. (shrink)

L'impianto didattico di questa 'Storia' consente di: conciliare l'esposizione piana dei concetti con il rigore del linguaggio filosofico; favorire la percezione delle strutture concettuali, con il duplice scopo di illustrare adeguatamente sia l'impianto filosofico dei singoli autori sia lo sviluppo storico dei diversi problemi; presentare la storia del pensiero moderno in una chiave di categorie filosofiche, oltre che storico-evolutiva; delineare i contesti storici in cui nascono le diverse espressioni del pensiero moderno; rimarcare la diversità dei generi letterari utilizzati dagli autori, (...) mostrandone la connessione con il loro modo di filosofare. (shrink)

Sewall Wright and Gustave Malécot developed important theories of isolation by distance. Wright’s theory was statistical and Malécot’s probabilistic. Because of this mathematical difference, they were not clear about the relationship between their theories. In this paper, I make two points to clarify this relationship. First, I argue that Wright’s theory concerns what I call ecological isolation by distance , whereas Malécot’s concerns what I call genetic isolation by distance . Second, I suggest that if Wright’s theory is interpreted appropriately, (...) a previously unnoticed connection between the two theories emerges. †To contact the author, please write to: Yoichi Ishida, Department of History and Philosophy of Science, University of Pittsburgh, 1017 Cathedral of Learning, Pittsburgh, PA 15260; e‐mail: [email protected]. (shrink)

H. Putnam has been considered the most Peircean philosopher among the neopragmatists. This note sugests that Putnam pays great atention to the problems Peirce tackled, but he does not share Peirce's thesis on the relation between "practical interests" and science. Therefore, Putnam's realism is more Deweyan and Jamesian than Peircean.

Stein has raised a fundamental problem for any attempt to characterize instrumentalism and realism as substantive alternatives. This is the distinguishability problem, which consists in the problem of developing a form of instrumentalism that is substantially different from a plausible realist alternative and the problem of showing that this form of instrumentalism does justice to actual scientific practice. Using Stein’s own discussion of Maxwell, I formulate instrumentalism and realism as a scientist’s attitudes toward models, where an attitude is understood to (...) be a complex of the scientist’s belief and intention regarding models. Developing a case study of Benzer’s modeling practice, I show that each attitude can structure inquiry differently and argue that to understand certain aspects of scientific practice, such as the practice of genetic mapping in Benzer’s work, we sometimes need to appeal to the coexistence of these attitudes. (shrink)

We report here an emerging dispute in Italy concerning triage criteria for critically ill covid-19 patients, and how best to support doctors having to make difficult decisions in a context of insufficient life saving resources. The dispute we present is particularly significant as it juxtaposes two opposite views of who should make triage decisions, and how doctors should best be supported. There are both empirical and normative questions at stake here. The empirical questions pertain to the available level of evidence (...) that healthcare professionals would rather not be left alone with their ‘clinical judgments’ to make triage decisions, and to the accounts of distributive justice that doctors and healthcare professionals rely on, when making triage decisions. The normative questions pertain to how this empirical evidence should inform guidelines on how prioritisation decisions are made in a context of emergency, and who gets to have the authority to do so. This debate goes beyond the discussion of the care of critically ill patients with COVID-19 and has broader implications beyond the national context for the discussion of how to relieve moral distress in contexts of imbalances between healthcare resources and clinical needs of a population. (shrink)

Robert MacArthur's mathematical ecology is often regarded as ahistorical and has been criticized by historically oriented ecologists and philosophers for ignoring the importance of history. I clarify and defend his approach, especially his use of simple mathematical models to explain patterns in data and to generate predictions that stimulate empirical research. First I argue that it is misleading to call his approach ahistorical because it is not against historical explanation. Next I distinguish three kinds of criticism of his approach and (...) argue that his approach is compatible with the first two of them. Finally, I argue that the third kind of criticism, advanced by Kim Sterelny and Paul Griffiths, is largely irrelevant to MacArthur's approach. ‡I am especially grateful to Thomas Nickles for encouragement and helpful comments on earlier versions of this paper. Thanks also to Guy Hoelzer, Stephen Jenkins, and Jay Odenbaugh for comments on an earlier draft, Kim Sterelny for clarifications of the Tasmania example, Gregory Mikkelson for references, and the audience at PSA 2006 for discussions. †To contact the author, please write to: Department of History and Philosophy of Science, University of Pittsburgh, 1017 Cathedral of Learning, Pittsburgh, PA 15260; e-mail: [email protected]. (shrink)

Perspective taking is conceptualized as a multidimensional construct characterized by three components: cognitive, affective, and visual. The experience of psychological maltreatment impairs the child’s emotional competence; in particular, maltreated children present difficulty in understanding and regulating emotions and in social understanding ability. In addition, the literature contains several contributions that highlight maladaptive behaviors of children with a history of maltreatment in peer interactions in the school context. Perspective taking ability has rarely been studied in maltreated children and the existing studies (...) have produced different and often conflicting results that require further insights. On the grounds of these premises, the main objective of the present research is to investigate perspective taking ability in preschool children from maltreating and non-maltreating family contexts and its role in social adjustment, in terms of prosocial and aggressive behavior toward peers inside the kindergarten. A second objective is to verify the effectiveness of a training aimed to promote perspective taking ability in victims of psychological maltreatment. This research, organized into two separate studies, involved 249 preschool children: 206 children from non-maltreating family contexts and 43 brought up in psychologically maltreating families. Perspective taking was measured via the administration of several tests, and prosocial behavior and aggressiveness were observed via non-participant observations in the school context. The training involved maltreated children in small-group meetings based on familiar and appealing activities within the mother–child community. The overall results show that children’s perspective taking ability, in particular the affective perspective taking, contributed to social adjustment. In fact, greater affective perspective taking ability was correlated to a higher frequency of prosocial behaviors toward peers and minor frequency of aggressiveness. Finally, the results of the training showed an increase in perspective taking, especially in the affective dimension, and a consequent increase in prosocial behaviors and a decrease in aggressive ones. Therefore, the affective perspective taking ability seems to represent a very significant protective factor, which should be focused and strengthened in order to improve the social adaptation of preschool children who are victims of psychological abuse. (shrink)

Understanding whether the long and elaborate songs of male gibbons have syntax and hierarchical structures is an interesting question in the evolution of language, because gibbons are near humans in the phylogenetic tree and a hierarchically organized syntax is considered to be a basic component of human language. We conducted field research at Danum Valley Conservation Area in northern Borneo to test the hypothesis that gibbon songs have syntax and chunks. We followed one Mueller’s gibbon group for 1 week in (...) the dry and rainy seasons every year from 2001 to 2009, collecting vocal and behavioral data. Results show that songs emitted by the studied male gibbon were governed by combinatory rules. Some context-dependent songs had different combinatory rules, although they overlapped with the songs whose contexts were uncertain. The male Mueller’s songs had characteristics that suggest existence of chunk structure. These results provided an important perspective in the study of language origin. (shrink)

Mueller's gibbons ( Hylobates muelleri ) sing both sex-specific and duet songs. These songs are thought to be involved in territory maintenance, as well as the maintenance of pair or family bonds. However, few observational studies have examined how gibbons interact with their neighbors through song in the wild. We have been conducting field observations of wild gibbon groups in northeast Borneo since 2001. In the Borneo Rainforest Lodge (BRL) and Danum Valley Field Center (DVFC) at the Danum Valley Conservation (...) Area (DVCA), we observed seven episodes of alternating songs between males. Here, we describe the process of song exchange between males. During male interactions, song bouts rarely overlapped and were alternately emitted. Several studies have reported antiphonal vocalizations in New World and Old World primate species, but rarely in apes. Our observations of antiphonal songs in gibbons indicate that gibbons not only unilaterally advertise information, but also interactively communicate with neighbors and family members through songs. Since gibbons are phylogenetically similar to humans, and turn-taking has an important role in human conversation, our research on gibbon communication may provide insight into the evolution of human language. (shrink)

Mueller’s gibbons sing both sex-specific and duet songs. These songs are thought to be involved in territory maintenance, as well as the maintenance of pair or family bonds. However, few observational studies have examined how gibbons interact with their neighbors through song in the wild. We have been conducting field observations of wild gibbon groups in northeast Borneo since 2001. In the Borneo Rainforest Lodge and Danum Valley Field Center at the Danum Valley Conservation Area, we observed seven episodes of (...) alternating songs between males. Here, we describe the process of song exchange between males. During male interactions, song bouts rarely overlapped and were alternately emitted. Several studies have reported antiphonal vocalizations in New World and Old World primate species, but rarely in apes. Our observations of antiphonal songs in gibbons indicate that gibbons not only unilaterally advertise information, but also interactively communicate with neighbors and family members through songs. Since gibbons are phylogenetically similar to humans, and turn-taking has an important role in human conversation, our research on gibbon communication may provide insight into the evolution of human language. (shrink)

The paper critically discusses the proposal of identifying the subject of human rights by means of the concept of moral person, reflecting on the inherent connection between the concept of person and that of human rights in their moral dimension, that is, in the light of an ethics of human rights, an ethics in which human rights represent fundamental moral values. The thesis defended is that the concept of moral person lends itself more than any other to the role of (...) subject of human rights, if conceived as a relational, communicative and representative social value, that is as “the concept of an individual human being whose features enable him to join some segments of his life with others”. (shrink)

Mating activity of a wild Mueller’s gibbon group was observed in the Danum Valley Conservation Area, Sabah, Malaysia. The purpose of this study was to investigate the function of copulation calls in gibbons. The female emitted copulation calls at the time of intromission and pelvic thrusting. Copulation calls were composed of two notes and one of them was sung only while mating. Approximately half of copulation calls were sung near the range boundary. Mating with copulation calls sometimes occurred while singing. (...) According to the model that female copulation calls have evolved under the selective pressures of risk of infanticide and sperm competition, copulation calls should be rare in species with little female promiscuity. As gibbons usually live in pair-living social organization and have a monogamous mating system, no vocal signals by female gibbons are considered to be needed. However, clear copulation calls were emitted by the female. It suggests that the relationship between paired gibbons is unstable. Copulation calls by the female Mueller’s gibbon may function to increase mate guarding and strengthen the pair bond. (shrink)