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261.
The renaissance of synaesthesia research has produced many insights regarding the aetiology and mechanisms that might underlie this intriguing phenomenon, which abnormally binds features between and within modalities. Synaesthesia is interesting in its own right, but whether it contributes to our knowledge of neurocognitive systems that underlie non-synaesthete experience is an open question. In this review, we show that results from the field of synaesthesia can constrain cognitive theories in numerical cognition, automaticity, crossmodal interaction and awareness. Therefore, research of synaesthesia provides a unique window into other domains of cognitive neuroscience. We conclude that the study of synaesthesia could advance our understanding of the normal and abnormal human brain and cognition. 相似文献
262.
Daniel Cohen 《Sophia》2009,48(2):143-150
It is sometimes argued that if God were to exist, then the actual world would be the best possible world. However, given that
the actual world is clearly not the best possible world, then God doesn’t exist. In response, some have argued that the world
could always be improved with the creation of new people and that there is thus no best possible world. I argue that this
reasoning gives rise to an instance of Parfit’s mere addition paradox and should thus be rejected. Others (Robert Adams, in particular) have argued that the actual world may, in fact, be the
best possible world, at least for all actual people. I argue that this reasoning gives rise to Parfit’s non-identity problem and should thus be rejected.
相似文献
Daniel CohenEmail: |
263.
Scott T. Wolf Taya R. Cohen Jeffrey L. Kirchner Andrew Rea R. Matthew Montoya Chester A. Insko 《European journal of social psychology》2009,39(5):831-841
Basic social psychological research has suggested several interventions to reduce intergroup conflict. Most of these interventions, however, have been indirect and impractical to implement outside laboratory settings. Although past research has demonstrated that indirect manipulations of the consideration of future consequences reduce intergroup competition, no study of interindividual–intergroup discontinuity has tested this assumption with a direct manipulation. The present study found that when participants (individuals and members of groups) interacting in an iterated prisoner's dilemma game (PDG) were asked to predict how their opponent's choice on a second trial would be affected by their own choice on an initial trial, intergroup competition was reduced while interindividual competition remained low regardless of the manipulation. On a practical level, implications of this study provide a simple and easily implemented solution to reducing intergroup conflict in non‐laboratory situations. Copyright © 2009 John Wiley & Sons, Ltd. 相似文献
264.
Number-form synesthetes consciously experience numbers in spatially-defined locations. For non-synesthete individuals, a similar association of numbers and space appears in the form of an implicit mental number line as signified by the distance effect–reaction time decreases as the numerical distance between compared numbers increases. In the current experiment, three number-form synesthetes and two different non-synesthete control groups (Hebrew speaking and English speaking) performed a number comparison task. Synesthete participants exhibited a sizeable distance effect only when presented numbers were congruent with their number-form. In contrast, the controls exhibited a distance effect regardless of congruency or presentation type. The findings suggest that: (a) number-form synesthesia impairs the ability to represent numbers in a flexible manner according to task demands; (b) number-form synesthesia is a genuine tangible experience, triggered involuntarily; and (c) the classic mental number line can be more pliable than previously thought and appears to be independent of cultural-lingo direction. 相似文献
265.
The question why synaesthesia, an atypical binding within or between modalities, occurs is both enduring and important. Two explanations have been provided: (1) a congenital explanation: we are all born as synaesthetes but most of us subsequently lose the experience due to brain development; (2) a learning explanation: synaesthesia is related to some learning process during childhood. Three recent studies provide conflicting support for these explanations. Two studies supported the idea that synaesthesia is learned by showing that the frequency of everyday language implicitly modulates the synaesthetic experience. Another study argued that synaesthesia reflects basic, innate magnitude representations. In this paper we reassess these points of view, and show that it is possible for both to be valid. These findings are integrated into an interactive specialization account of development in order to explain the neuronal mechanism underlying synaesthesia. 相似文献
266.
In this study adults performed numerical and physical size judgments on a symbolic (Arabic numerals) and non-symbolic (groups
of dots) size congruity task. The outcomes would reveal whether a size congruity effect (SCE) can be obtained irrespective
of notation. Subsequently, 5-year-old children performed a physical size judgment on both tasks. The outcomes will give a
better insight in the ability of 5-year-olds to automatically process symbolic and non-symbolic numerosities. Adult performance
on the symbolic and non-symbolic size congruity tasks revealed a SCE for numerical and physical size judgments, indicating
that the non-symbolic size congruity task is a valid indicator for automatic processing of non-symbolic numerosities. Physical
size judgments on both tasks by children revealed a SCE only for non-symbolic notation, indicating that the lack of a symbolic
SCE is not related to the mathematical or cognitive abilities required for the task but instead to an immature association
between the number symbol and its meaning. 相似文献
267.
Harris LT McClure SM van den Bos W Cohen JD Fiske ST 《Cognitive, affective & behavioral neuroscience》2007,7(4):309-316
The medial prefrontal cortex (MPFC) reliably activates in social cognition and reward tasks. This study locates distinct areas
for each. Participants made evaluative (positive/negative) or social (person/not a person) judgments of pictured positive
or negative people and objects in a slow event-related design. Activity in an anterior rostral region (arMPFC) was significantly
greater for positive than for negative persons but did not show a valence effect for objects, and this was true regardless
of the judgment task. This suggests that the arMPFC is tuned to social valence. Interestingly, however, no regions of the
MPFC were found to be responsive to social information independently of valence. A region-of-interest analysis of the paraanterior
cingulate cortex (pACC), previously implicated in reward processing, demonstrated sensitivity to the valence of all stimuli,
whether persons or objects, across tasks. Affective evaluation may be a general function of the MPFC, with some regions being
tuned to more specific domains of information (e.g., social) than are others. 相似文献
268.
The present study integrates findings from three lines of research on the association of social cognition and externalizing
psychopathology, language and externalizing psychopathology, and social cognition and language functioning using Structural
Equation Modeling (SEM). To date these associations have been examined in pairs. A sample of 354 clinic-referred children
(aged 7 to14 years) recruited from a children’s mental health centre were tested on measures of language, social cognition,
working memory, and child psychopathology. We compared a hypothesized model presenting language functioning as a mediator
of the association between social cognition and externalizing psychopathology to a model presenting the independent contribution
of language and social cognition to externalizing psychopathology. As hypothesized, we found that the mediation model fits
the data better than the alternative model. Our findings have implications for developing and modifying intervention techniques
for children with dual language and externalizing psychopathology.
This research was supported by a grant from Health Canada (NHRDP, 6606-4835) to the third author. 相似文献
269.
270.
Context processing in older adults: evidence for a theory relating cognitive control to neurobiology in healthy aging. 总被引:6,自引:0,他引:6
T S Braver D M Barch B A Keys C S Carter J D Cohen J A Kaye J S Janowsky S F Taylor J A Yesavage M S Mumenthaler W J Jagust B R Reed 《Journal of experimental psychology. General》2001,130(4):746-763
A theory of cognitive aging is presented in which healthy older adults are hypothesized to suffer from disturbances in the processing of context that impair cognitive control function across multiple domains, including attention, inhibition, and working memory. These cognitive disturbances are postulated to be directly related to age-related decline in the function of the dopamine (DA) system in the prefrontal cortex (PFC). A connectionist computational model is described that implements specific mechanisms for the role of DA and PFC in context processing. The behavioral predictions of the model were tested in a large sample of older (N = 81) and young (N = 175) adults performing variants of a simple cognitive control task that placed differential demands on context processing. Older adults exhibited both performance decrements and, counterintuitively, performance improvements that are in close agreement with model predictions. 相似文献