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441.
Most studies of spatial memory in primates focus on species that inhabit large home ranges and have dispersed, patchy resources.
Researchers assume that primates use memory to minimize distances traveled between resources. We investigated the use of spatial
memory in a group of six white-faced sakis (Pithecia pithecia) on 12.8-ha Round Island, Guri Lake, Venezuela during a period of fruit abundance. The sakis’ movements were analyzed with
logistic regressions, a predictive computer model and a computer model that simulates movements. We considered all the resources available to the sakis and compared observed distances to predicted distances from a computer
model for foragers who know nothing about the location of resources. Surprisingly, the observed distances were four times
greater than the predicted distances, suggesting that the sakis passed by a majority of the available fruit trees without
feeding. The odds of visiting a food tree, however, were significantly increased if the tree had been visited in the previous
3 days and had more than 100 fruit. The sakis’ preferred resources were highly productive fruit trees, Capparis trees, and trees with water holes. They traveled efficiently to these sites. The sakis choice of feeding sites indicate that
they combined knowledge acquired by repeatedly traveling through their home range with ‘what’ and ‘where’ information gained
from individual visits to resources. Although the sakis’ foraging choices increased the distance they traveled overall, choosing
more valued sites allowed the group to minimize intragroup feeding competition, maintain intergroup dominance over important
resources, and monitor the state of resources throughout their home range. The sakis’ foraging decisions appear to have used
spatial memory, elements of episodic-like memory and social and nutritional considerations.
This contribution is part of the Special Issue “A Socioecological Perspective on Primate Cognition” (Cunningham and Janson
2007). 相似文献
442.
Is there a specific neurocognitive system underlying the subjective sense of having a unitary continuous self across time? If so, it should be possible to isolate functions involved in the sense of self from those supporting mental activities that the self is currently engaged in. We report a study of real-time noninvasive recordings of the brain's electrical activity (event-related potentials, ERPs). We found a common neural signature that is associated with self-referential processing regardless of whether subjects are retrieving general knowledge (noetic awareness) or reexperiencing past episodes (autonoetic awareness). These ERP data are consistent with models of autobiographical memory that postulate a single locus of control over explicit memory for various kinds of self-related information. The temporal properties and scalp distribution of this novel self-reference ERP effect also suggest that it may be a neurophysiological correlate of self-related activation in medial prefrontal and parietal neocortical circuits identified in functional magnetic resonance imaging experiments. 相似文献
443.
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445.
Elena Takho-Godi 《Studies in East European Thought》2004,56(2-3):225-241
This article is devoted not only to Losev'sphilosophical works, but also to his fiction,which he created during 1930s and 1940s.Losev's eight books of the 1920s (his``octateuch'') combine into a single whole thatamounts to his philosophy of life and historydepicted in expressive images. At the same timeLosev's ``octateuch'' strikes one as having beenwritten at a single sitting and in a singlestyle, in a genre that can be identified as the``philosophical novel'' having as much right asSpengler's opus to be called an ``intellectualnovel.'' In his prose of the 1930s and 1940sLosev tries with artistic methods to resolvethe philosophical problems which he raised inhis works of the 1920s. Losev's ``octateuch'' andhis fiction are directed against thosecontemporary materialists who seek to embodyPlato's Republic, whom he christens``soil-less nihilist idealist utopians.'' All ofthis leads to the conclusion that Losev'sintellectual novel belongs to a definite andmore specific subgenre. It is undoubtedly ananti-utopia, full of the grotesque. In additionto its scientific and social orientation,Losev's anti-utopia is also religious innature. Thus Losev not only depicts the realconsequences of utopian dreams, but also turnsto the ``life of the artist,'' which is far fromany technological or social utopias but isfilled with another, no less terrifying ornihilistic utopia: that of the non-religiousexistence of the human person. Losev preservedhis anti-utopian and anti-nihilist viewsthrough his late period (1950s–1980s), despitethe care he took not to cross Sovietcensorship. Losev's anti-utopia is the kind ofChristian realism to which he appealedthroughout his life. 相似文献
446.
English-speaking children typically avoid using regular plurals in novel grammatical deverbal compounds as in rat eater but allow irregular plurals as in mice eater (Gordon, 1985). To explain these data, it has been argued that Kiparsky’s (1983) level-ordering model constrains the production of morphologically complex words, including those with which children have had little to no experience. If level-ordering can be supported, children should avoid regular plurals in their ungrammatical deverbal compounds like a breaker-bottle. Seventy-two English-speaking children were included in the present study, 36 from Britain and 36 from Canada. The results showed that 50% of the children who produced ungrammatical compounds included regular plurals in the compounds they produced. Conversely, none of the children who produced grammatical compounds included regular plurals. These results indicate that level-ordering does not constrain children’s production of ungrammatical compounds. These results raise the possibility that level-ordering may not be a valid constraint of children’s compounding in general. 相似文献
447.
Asa Bartonek Cecilia Lidbeck Kerstin Hellgren Elena Gutierrez-Farewik 《Journal of motor behavior》2019,51(4):362-370
Thirty children with cerebral palsy (CP) and 22 typical developing (TD) were tested with 3D-gait analysis. At turning, trunk rotation was larger in CP2 (GMFCS II) than in TD and CP1 (GMFCS I), and head flexion was larger in CP3 (GMFCS III) than TD. Maximum head and trunk flexion values during the entire trial were larger in CP3 than in the other groups, and trunk flexion was larger in CP2 than in TD. Trial time increased with GMFCS-level. Less trunk rotation than TD and CP1 reflects spatial insecurity in CP2, which in CP3 is compensated by the walker. The flexed head and trunk in CP3 and trunk in CP2 may reflect deficits in proprioception and sensation requiring visual control of the lower limbs. 相似文献
448.
Monolingual English‐speaking preschool children tend to process number gestures as unanalyzed wholes rather than use the one‐to‐one (finger‐to‐quantity) correspondence. By school age, however, children can use the one‐to‐one correspondence. The purpose of the present studies was to test whether children learn one‐to‐one correspondence through exposure to a variety of finger configurations to convey a single quantity. In Study 1, we compared children with exposure to multiple one‐to‐one configurations, that is, French‐English and German‐English bilingual children, to English monolingual children who see consistent representations. As predicted, the bilingual children performed better in interpreting unconventional number gestures. In Study 2, we compared Chinese‐English bilingual children who knew arbitrary one‐handed Chinese numbers gestures for quantities 6–10 to Chinese‐English bilingual children who did not know these gestures, as well as to monolingual English speakers. Chinese‐English bilinguals who knew the arbitrary gestures were more likely to interpret unconventional gestures arbitrarily (i.e., influenced by the written and/or Chinese gesture forms). These children did not differ from English monolinguals in the interpretation of unconventional gestures. These results are consistent with the argument that children can become sensitive to the one‐to‐one correspondence in number gestures with exposure to multiple configurations for the same quantity. 相似文献
449.
Factor Structure,Internal Consistency and Criterion Validity of the Full‐form and Short‐form Versions of the Centrality of Events Scale in Young People
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Santiago Galán Elena Castarlenas Mélanie Racine Elisabet Sánchez‐Rodríguez Catarina Tomé‐Pires Mark P. Jensen Jordi Miró 《Applied cognitive psychology》2017,31(6):662-667
The perceived centrality of a traumatic event has been hypothesized to impact subsequent responses to that event and shown to be positively associated to a number of psychological problems. In order to understand the role of this construct in adjustment to stress and trauma, reliable and valid measures are needed. The objective of this study was to evaluate the factor structure, internal consistency and convergent validity of the full‐form and short‐forms of the Centrality of Event Scale when used with young people. A sample of 262 undergraduate students completed this study. Confirmatory factor analyses, Cronbach alpha coefficients and Pearson correlation coefficients were performed. The findings support a one‐factor structure of the full 20‐item and the short 7‐item versions. We also found that both versions provide reliable and valid scores when used with young people. We recommend the use of the 7‐item version to minimize assessment burden. Copyright © 2017 John Wiley & Sons, Ltd. 相似文献
450.
This study contributes to the sport and team literature by exploring the conditions in which trust in a leader translates into trust in a team and subsequent team performance. Findings from 709 athletes on 74 basketball teams demonstrated that trust in the coach represents a critical antecedent of team trust, especially when the team's past performance has been poor. We also found a combined effect of the level and consensus in trust on team performance. Practical implications suggest that a coach needs to ensure that every player, rather than just some or even the majority of individual team members, trusts him or her and the team. 相似文献