Dominance assertion in male chimpanzees (Pan troglodytes)

The social relations of three adult males in a captive chimpanzee group were evaluated for 12 months. The observations encompassed a period of transition in the dominance hierarchy providing an opportunity to assess behavioral patterns involved in the initiation of status changes. This study shows that dominance in the chimpanzee is expressed primarily through ritualized and non-contact behavior rather than by overt aggression. In particular, display behavior is important for indicating dominance rank, in communicating aggressive intent, and as a prelude to status struggles. The functional relationships between status, displays and other socio-sexual behavior patterns are presented.     

Development of interception of moving targets by chimpanzees (<Emphasis Type="Italic">Pan troglodytes</Emphasis>) in an automated task

The experiments investigated how two adult captive chimpanzees learned to navigate in an automated interception task. They had to capture a visual target that moved predictably on a touch monitor. The aim of the study was to determine the learning stages that led to an efficient strategy of intercepting the target. The chimpanzees had prior training in moving a finger on a touch monitor and were exposed to the interception task without any explicit training. With a finger the subject could move a small "ball" at any speed on the screen toward a visual target that moved at a fixed speed either back and forth in a linear path or around the edge of the screen in a rectangular pattern. Initial ball and target locations varied from trial to trial. The subjects received a small fruit reinforcement when they hit the target with the ball. The speed of target movement was increased across training stages up to 38 cm/s. Learning progressed from merely chasing the target to intercepting the target by moving the ball to a point on the screen that coincided with arrival of the target at that point. Performance improvement consisted of reduction in redundancy of the movement path and reduction in the time to target interception. Analysis of the finger's movement path showed that the subjects anticipated the target's movement even before it began to move. Thus, the subjects learned to use the target's initial resting location at trial onset as a predictive signal for where the target would later be when it began moving. During probe trials, where the target unpredictably remained stationary throughout the trial, the subjects first moved the ball in anticipation of expected target movement and then corrected the movement to steer the ball to the resting target. Anticipatory ball movement in probe trials with novel ball and target locations (tested for one subject) showed generalized interception beyond the trained ball and target locations. The experiments illustrate in a laboratory setting the development of a highly complex and adaptive motor performance that resembles navigational skills seen in natural settings where predators intercept the path of moving prey. Electronic Supplementary Material Supplementary material is available for this article if you access the article at . A link in the frame on the left on that page takes you directly to the supplementary material.     

潘菽心理学思想的当代启示

潘菽对心理学的研究对象、心理学的学科性质、心理学的研究方法、心理学的理论研究与应用研究的关系等问题进行了系统、深刻的分析,为人们正确地进行心理学研究提供了重要的理论启示;他对心理学未来发展的预测,揭示了心理学与社会发展之间的关系,对心理学研究者也是一种莫大的鼓励。文章对这些问题进行了较为详细的分析。     

Cues that chimpanzees do and do not use to find hidden objects

Chimpanzees follow conspecific and human gaze direction reliably in some situations, but very few chimpanzees reliably use gaze direction or other communicative signals to locate hidden food in the object-choice task. Three studies aimed at exploring factors that affect chimpanzee performance in this task are reported. In the first study, vocalizations and other noises facilitated the performance of some chimpanzees (only a minority). In the second study, various behavioral cues were given in which a human experimenter either touched, approached, or actually lifted and looked under the container where the food was hidden. Each of these cues led to enhanced performance for only a very few individuals. In the third study – a replication with some methodological improvements of a previous experiment – chimpanzees were confronted with two experimenters giving conflicting cues about the location of the hidden food, with one of them (the knower) having witnessed the hiding process and the other (the guesser) not. In the crucial test in which a third experimenter did the hiding, no chimpanzee found the food at above chance levels. Overall, in all three studies, by far the best performers were two individuals who had been raised in infancy by humans. It thus seems that while chimpanzees are very good at “behavior reading” of various sorts, including gaze following, they do not understand the communicative intentions (informative intentions) behind the looking and gesturing of others – with the possible exception of enculturated chimpanzees, who still do not understand the differential significance of looking and gesturing done by people who have different knowledge about states of affairs in the world. Received: 8 November 1999 / Accepted after revision: 24 January 2000     

潘菽心理学思想的后经验主义蕴含

今年是中国心理学泰斗,理论心理学奠基人潘菽先生诞辰110周年。纪念潘菽先生,意味着继承和发扬潘菽先生的心理学思想。从后经验主义理论心理学的视角来看,潘菽先生的心理学思想仍然具有当代性和启发性,特别是在强调理论对经验研究的优先地位、强调理论对经验现实的建构作用、强调理论的实践品性、强调理论的历史性向度,以及强调理论研究的中国心理学归宿等方面,显示出卓越的远见。     

Peter Pan and the flight from reality: A tale of narcissism,nostalgia and narrative trespass

Abstract

It is argued that J. M. Barrie's ‘Neverland’ represents a latency phantasy of flight to a world apart from that of adults, in which there is scope for both a denial of, and a tentative exploration of, the coming realities of adolescence. Celebrated for his ability to stay a boy forever, Peter Pan can be understood as a character who embodies the narcissistic need of some individuals to retreat from the realities of the adult world. Reactions to Peter Pan have been curiously divided, and it is suggested that this split can be understood in terms of Barrie's highly ambivalent attitude towards childhood – in which sentimental nostalgia quickly turns to bitterness and a sense of exclusion from the maternal object.     

The Legacy,Leadership, and Hope of Pan‐African Women as a Missional Focus for Theological Education

This article analyzes the experience and self‐understanding of Pan‐African women of faith, who have often been viewed at the margins of church history and in the larger context of this history. This article challenges this marginal location. It argues that through the theological lens of the ecumenical Pilgrimage of Justice and Peace—and under the tenets of via positiva, via negativa, and via transformativa—the historical, present, and future pilgrimage of Pan‐African women of faith and their vision of hope needs to be further examined for a more inclusive embrace and accompaniment of the ecumenical community. Theological education should be a priority in preparing leaders for advancing the agenda of justice and peace. The article concludes by detailing the past, recent, and future work of the Pan‐African Women's Ecumenical Empowerment Network (PAWEEN) and its partners.     

Mentoring in Caribbean Theological Education

This article addresses the issue of mentoring in theological education, drawing against the context of the Caribbean and the insights of Pan‐African Women, such as in the Circle of Concerned African Women Theologians, as well as support and accountability groups such as Caribbean Women Theologians for Transformation and the Caribbean and North America Council for Mission. Drawing on biblical models of mentoring, the article argues that while the ways that individuals are mentored during their theological education programmes can and will vary, women in leadership can be sounding boards, cheerleaders, advocates, facilitators, coaches, guides, role models, and even critics as they help to shape and develop other women leaders in the church.     

Pan‐African Women of Faith and a Vision of Inclusive Global Theological Education

This article provides an introduction to the Pan‐African Women's Ecumenical Empowerment Network (PAWEEN), formally established as a network in 2015, but which traces its origins back to the 10th Assembly of the World Council of Churches (WCC) in Busan, the Republic of Korea, in 2013. PAWEEN provides an opportunity for a mutual invitation to deep listening and concerted engagement to make the realities of past and present living, of faith and agency visible. It is one example of a network under development, grounded in the liberating gospel message and committed to the aim of a transformative theological education, which extends this invitation to all who share this common concern and vision.     

Structural analysis of tool-use by tufted capuchins (Cebus apella) and chimpanzees (Pan troglodytes)

Using Matsuzawa’s hierarchical system of classification, I compared tool-use patterns of tufted capuchins (Cebus apella) to those of chimpanzees (Pan troglodytes). The results indicated that wild C. apella exhibit fewer and less complex tool-use patterns than do captive C. apella and wild and captive P. troglodytes. Although most patterns of tool-use observed among P. troglodytes occur in captive C. apella, there are some notable exceptions, including tool-use in communicative contexts and the use ¶of three-tool combinations. I conclude that C. apella are unique among monkeys in their demonstrated propensities for higher-order combinatorial behavior and are likely capable of using symbolic combinations, although not at the level of complexity that has been demonstrated in ¶P. troglodytes.