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101.
《Quarterly journal of experimental psychology (2006)》2013,66(1):194-204
In the same–different match task, masked priming is observed with the same responses but not different responses. Norris and Kinoshita's (2008) Bayesian reader account of masked priming explains this pattern based on the same principle as that explaining the absence of priming for nonwords in the lexical decision task. The pattern of priming follows from the way the model makes optimal decisions in the two tasks; priming does not depend on first activating the prime and then the target. An alternative explanation is in terms of a bias towards responding “same” that exactly counters the facilitatory effect of lexical access. The present study tested these two views by varying both the degree to which the prime predicts the response and the visibility of the prime. Unmasked primes produced effects expected from the view that priming is influenced by the degree to which the prime predicts the response. In contrast, with masked primes, the size of priming for the same response was completely unaffected by predictability. These results rule out response bias as an explanation of the absence of masked priming for different responses and, in turn, indicate that masked priming is not a consequence of automatic lexical access of the prime. 相似文献
102.
《Quarterly journal of experimental psychology (2006)》2013,66(3):541-552
When faced with two competing hypotheses, people sometimes prefer to look at multiple sources of information in support of one hypothesis rather than to establish the diagnostic value of a single piece of information for the two hypotheses. This is termed pseudodiagnostic reasoning and has often been understood to reflect, among other things, poor information search strategies. Past research suggests that diagnostic reasoning may be more easily fostered when participants seek data to help in the selection of one of two competing courses of action as opposed to situations where they seek data to help infer which of two competing hypotheses is true. In the experiment reported here, we provide the first empirical evidence demonstrating that manipulating the relevance of the feature for which participants initially receive information determines whether they will make a nominally diagnostic or pseudodiagnostic selection. The discussion of these findings focuses on implications for the ability to engage in diagnostic hypothesis testing. 相似文献
103.
《Quarterly journal of experimental psychology (2006)》2013,66(12):2329-2347
Choice reaction times are shorter when stimulus and response locations are compatible than when they are incompatible as in the Simon effect. Recent studies revealed that Simon effects are strongly attenuated when there is temporal overlap with a different high-priority task, accompanied by a decrease of early location-related response priming as reflected in the lateralized readiness potential (LRP). The latter result was obtained in a study excluding overlap of stimulus location with any other dimension in the tasks. Independent evidence suggests that location-related priming might be present in conditions with dimensional overlap. Here we tested this prediction in a dual-task experiment supplemented with recording LRPs. The secondary task was either a standard Simon task where irrelevant stimulus location overlapped with dimensions of the primary task or a Stroop-like Simon task including additional overlap of irrelevant and relevant stimulus attributes. At high temporal overlap, there was no Simon effect nor was there stimulus-related response priming in either condition. Therefore stimulus-triggered response priming seems to be abolished in conditions of limited capacity even if the likelihood of an S–R compatibility effect is maximized. 相似文献
104.
《Journal of Cognitive Psychology》2013,25(5-6):605-618
ABSTRACTIn this paper, we propose self-organising maps as possible candidates to explain the psychological mechanisms underlying category generalisation. Self-organising maps are psychologically and biologically plausible neural network models that can learn after limited exposure to positive category examples, without any need of contrastive information. They reproduce human behaviour in category generalisation, in particular, the Numerosity and Variability effects, which are usually explained with Bayesian tools. Where category generalisation is concerned, self-organising maps deserve attention to bridge the gap between the computational level of analysis in Marr's hierarchy (where Bayesian models are often situated) and the algorithmic level of analysis in which plausible mechanisms are described. 相似文献
105.
Daniel A. Drubach 《Journal of religion and health》2002,41(4):311-322
Modifications of the self, that is to say, transformation of the psychological, physical and spiritual make up of an individual to achieve or approximate an ideal individual is one of the main goals of religion, medicine and psychology. However, these fields approach self-modification from their own perspective, with little intercorrelations between them. This article explores how mechanisms for self modification delineated by Judaic sources are very much in line with new discoveries in neurosciences, especially with recent scientific data indicating that the brain is in a constant state of structural and functional change, a property denominated brain plasticity. 相似文献
106.
创造性的生理研究新进展 总被引:7,自引:0,他引:7
创造性的生理基础很复杂。关于创造性生理基础的研究集中在大脑皮质激活与脑半球不对称两个方面。研究发现,大脑皮质激活状态对创造性有影响,低水平的皮质激活,特别是低水平的前额叶激活,较有利于创造性.研究还发现,创造性和左右半球不对称活动有关,处于创造状态时,右半球相对要比左半球激活程度更高。 相似文献
107.
Treatment, Age, and Time-Related Predictors of Behavioral Outcome in Pediatric Brain Tumor Survivors
The research has shown that children surviving cancer are at risk for long-term emotional and behavioral problems secondary to the cumulative effects of cranial irradiation and chemotherapy. The purpose of this study was to investigate the emotional and behavioral outcome of children diagnosed with brain tumor and treated with cranial irradiation and chemotherapy by looking at the association between treatment, time, age, and cognitive-related variables on externalizing and internalizing behaviors at 3 years posttreatment. Fifty-four brain tumor survivors were administered a neuropsychological test battery, whereas the parents filled out the CBCL and Conners' Parent Rating Scale. The results indicate that chemotherapy treatment with vincristine, cytoxan, cisplantinum, and/or VP16 was related to poorer internalizing and externalizing behavioral outcome, especially attention, social withdrawal, and anxious–depressive symptomatology. Age at time of diagnosis or treatment, time since discontinuation of treatment, type and/or total dose of radiation therapy was not significantly correlated with any of the behavioral outcome scales. Verbal memory and learning deficits accounted for a significant portion of the variance in social withdrawal, whereas lower scores in overall intellectual functioning and verbal fluency was related to disturbances in attention, inhibition, and social functioning. The findings suggest that children treated with 1 or a combination of any of the aforementioned chemotherapy agents who exhibit declines in intellectual functioning and memory are at increased risk for long-term behavioral problems 3 years after treatment cessation. These findings support the importance for early psychotherapeutic and supportive intervention services immediately after treatment cessation, with the goal of circumventing these potentially debilitating emotional problems. 相似文献
108.
109.
Kristin L. Croyle Alexander I. Tröster Julie A. Fields Kristy A. Straits-Tröster Kelly E. Lyons Rajesh Pahwa 《Journal of clinical psychology in medical settings》2003,10(2):101-107
This study describes utilization of coping strategies and evaluates the interaction between coping strategies, depression, and quality of life (QOL) in patients with Parkinson's disease (PD) who are being considered for neurosurgical intervention. Eighty patients (mean age 61.7 years) with PD being evaluated for possible deep brain stimulation completed self-report instruments of coping strategies (Coping Responses Inventory), depression (Beck Depression Inventory), and disease-specific QOL (Parkinson's Disease Questionnaire-39). Analyses showed that patients with PD cope with the acute stressor of approaching neurosurgery through a variety of strategies, but particularly avoidant and behavioral strategies. When the correlated but apparently opposing effects of cognitive and behavioral strategies were teased apart, greater use of cognitive strategies was associated with more severe depressive symptomatology (and poorer QOL), while greater use of behavioral strategies appeared to be associated with less depression. Depressive symptomatology, in turn, was associated with poorer QOL. However, coping had minimal direct association with QOL. From this it was concluded that patients with advanced PD generate a variety of coping responses to an acute stressor such as surgery, and the use of behavioral strategies, in particular seeking of alternative enjoyable activities, may be associated with better mood if salutary effects are not overwhelmed by less helpful cognitive coping techniques. The minimization of depressive symptomatology, in turn, is associated with better QOL. 相似文献
110.
Why Higher Working Memory Capacity May Help You Learn: Sampling,Search, and Degrees of Approximation
Algorithms for approximate Bayesian inference, such as those based on sampling (i.e., Monte Carlo methods), provide a natural source of models of how people may deal with uncertainty with limited cognitive resources. Here, we consider the idea that individual differences in working memory capacity (WMC) may be usefully modeled in terms of the number of samples, or “particles,” available to perform inference. To test this idea, we focus on two recent experiments that report positive associations between WMC and two distinct aspects of categorization performance: the ability to learn novel categories, and the ability to switch between different categorization strategies (“knowledge restructuring”). In favor of the idea of modeling WMC as a number of particles, we show that a single model can reproduce both experimental results by varying the number of particles—increasing the number of particles leads to both faster category learning and improved strategy‐switching. Furthermore, when we fit the model to individual participants, we found a positive association between WMC and best‐fit number of particles for strategy switching. However, no association between WMC and best‐fit number of particles was found for category learning. These results are discussed in the context of the general challenge of disentangling the contributions of different potential sources of behavioral variability. 相似文献