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Theories of autism have proposed that a bias towards low-level perceptual information, or a featural/surface-biased information-processing style, may compromise higher-level language processing in such individuals. Two experiments, utilizing linguistic stimuli with competing low-level/perceptual and high-level/semantic information, tested processing biases in children with autism and matched controls. Whereas children with autism exhibited superior perceptual processing of speech relative to controls, and showed no evidence of either a perceptual or semantic processing bias, controls showed a tendency to process speech semantically. The data provide partial support to the perceptual theories of autism. It is additionally proposed that the pattern of results may reflect different patterns of attentional focusing towards single or multiple stimulus cues in speech between children with autism and controls. 相似文献
314.
In this study we tested the hypothesis that fear might facilitate learning when experienced contextually to the task. To this purpose, learning and memory performance of CD-1 mice in a Morris Water Maze (MWM) was assessed in the presence of a live predator (rat). Results indicate that a live predator induced specific predatory-avoidance responses, such as diving behavior and thigmotaxis. The rat-exposed group showed the most adaptive strategy, balancing anti-predator behavior and escape responses, while the rat pre-exposed group showed impairment in the initial phases of the acquisition. The probe trial revealed distinct swimming patterns but equal memory abilities in the different groups. Overall, this procedure represents a novel and easy test to assess the effects of stressful stimuli, contextually to spatial learning and memory performance, in mice. 相似文献
315.
Egidio Robusto Francesca Cristante Michelangelo Vianello 《Behavior research methods》2008,40(4):954-960
The present study consists of a longitudinal investigation in which implicit association measures were collected by means
of the implicit association test (IAT), with the purpose of assessing the impact of replication on the test effect with the
same participants. The extended logistic model for the assessment of change (ELMAC), a procedure that belongs to Rasch modeling,
was applied. By means of the ELMAC application, the existence of latent traits characteristic of the impact on the IAT effect
(due to replication through time) is shown; more precisely, the model time parameters show the decrement of the IAT effect
through time, due to the decrease of the implicit preference in both conditions, compatible and incompatible, associated with
sweet foods and salty foods. The results confirm that in the long run, the incompatible condition latency may approach the
compatible condition latency, causing a significant attenuation of the IAT effect. 相似文献
316.
This paper reexamines Frith's original concept of weak coherence, its historical origins, recent reformulations, and alternative accounts. We suggest that the key notion of reduced global integration of information, which Frith proposed to underlie the assets in local processing, has been neglected in recent accounts of autism spectrum disorders (ASD). In fact, most paradigms used to test weak coherence conflate global and local processing, often placing them in direct trade-off, so that it is not possible to tell whether patterns of performance in ASD reflect reduced global processing, increased local processing, or both. We review the literature from typical development and ASD that may be pertinent to this distinction and examine some data from our own studies. Only once tasks are devised that measure separately the effects of reduced global processing and increased local processing will it be possible to test the on-line and developmental relations between these two aspects of "weak coherence". Some preliminary ideas about these relationships are discussed, and suggestions are made for why disentangling two possibly independent dimensions of weak coherence may be timely and productive. 相似文献
317.
Francesca Gino Lamar Pierce 《Organizational behavior and human decision processes》2009,109(2):142-155
Three laboratory studies investigated the hypothesis that the presence of wealth may influence people’s propensity to engage in unethical behavior for financial gain. In the experiments, participants were given the opportunity to cheat by overstating their performance on an anagram task. In each study, one group was stimulated by the visible proximity of monetary wealth. We found that the presence of abundant wealth led to more frequent cheating than an environment of scarcity. Our experiments also investigated the potential mechanisms behind this effect. The results showed that the presence of abundant wealth provoked feelings of envy toward wealthy others that, in turn, led to unethical behavior. Our findings offer insights into when and why people engage in unethical behavior. 相似文献
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