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181.
When subjects switch between two tasks, performance is slower after a task switch than after a task repetition. We report five experiments showing that a large part of these "task-shift-costs" cannot be attributed to a control operation, needed to configure the cognitive system for the upcoming task (e.g., ). In all experiments subjects switched between picture-naming and word-reading. We presented different stimuli either in just one of the two tasks, or in both of them. Shift-costs were larger for stimuli presented in both tasks than for those presented in only one task, even after more than 100 intervening trials between prime and probe events. We suggest (as proposed by ) that stimuli acquire associations with the tasks in which they occur. When the current task activation is weak, as on a switch of tasks, stimuli can trigger retrieval of the associated, competing task, provoking larger time costs. 相似文献
182.
Sargolini F Florian C Oliverio A Mele A Roullet P 《Learning & memory (Cold Spring Harbor, N.Y.)》2003,10(4):285-292
Recent evidence now points to a role of glutamate transmission within the nucleus accumbens (Nacc) in spatial learning and memory. Unfortunately, the role of the distinct classes of glutamate receptors within this structure in mediating the different steps of the memorization process is not clear. The aim of this study therefore was to further investigate this issue, trying to assess the involvement of the two classes of glutamate receptors within the Nacc in consolidation of spatial information using an associative spatial task, the water maze. For this purpose, focal injections of the NMDA antagonist, AP-5, and of the AMPA antagonist, DNQX, have been performed immediately after the training phase, and mice have been tested for retention 24 h later. Two different versions of the water-maze task have been used: In the place version, animals could learn the position of the platform using visual distal cues, and in the cue version, the location of the platform was indicated by a single proximal cue. The results demonstrated that posttraining NMDA receptor blockade affects mice response in the place but not in the cue water-maze task. On the contrary, AMPA receptor blockade induced no effect in either version of the task. These data confirm a functional dissociation between glutamate receptors located in the Nacc in modulating spatial memory consolidation and indicate that they are specifically involved in consolidation of information necessary to acquire a place but not to a guidance strategy. 相似文献
183.
Florian Ganzinger 《European Journal of Philosophy》2023,31(3):639-654
Kant famously claims that pure reason is subject to a transcendental illusion in which the subjective validity and the regulative use of a principle of reason are conflated with its objective validity and constitutive use. His doctrine of transcendental illusion is puzzling for he insists that this illusion is natural as well as necessary. The two dominant interpretation strategies cannot make sense of this puzzle because they turn out to be either too strong or too weak: they either struggle to account for the legitimate, regulative use of the transcendental principle of reason or fall short of explaining the necessity of the transcendental illusion. In contrast, I shall argue that it is possible to account for the fact that the transcendental illusion is natural and necessary because it has its source in the discursive form of our human understanding, and that this illusion can nevertheless be known to be illusory because our discursive nature can be recognised as a merely particular form of understanding by comparing it with a possible, intuitive form of understanding in an act of critical self-reflection. 相似文献
184.
The current research assesses the association between spouses' self-reports of attachment style and their perceptions of family dynamics. The sample included 93 Israeli married couples with young children. Both husbands and wives completed the adult attachment style scale and the perceived and ideal versions of FACES III. Findings showed that spouses whose self-reports endorsed the secure style perceived relatively high levels of family cohesion and adaptability; persons who endorsed the anxious-ambivalent style reported high levels of family cohesion but low levels of adaptability; and persons who endorsed the avoidant style reported relatively low levels of both family dimensions. In addition, significant associations were found between reports of attachment styles, on the one hand, and ideal representations of family dynamics, the marital partner's representations of family dynamics, and spouses' discrepancies in these representations, on the other. Findings are discussed in terms of attachment theory. 相似文献
185.
186.
Florian Ganzer Sonja Bröning Stefanie Kraft Peter-Michael Sack Rainer Thomasius 《Neuropsychology review》2016,26(2):186-222
Findings on neurocognitive effects of sustained cannabis use are heterogeneous. Previous work has rarely taken time of abstinence into account. In this review, we focus on understanding sustained effects of cannabis, which begin when clinical symptoms of the drug have worn off after at least 14 days. We conducted a search between 2004 and 2015 and found 38 studies with such a prolonged abstinence phase. Study-design quality in terms of evidence-based medicine is similar among studies. Studies found some attention or concentration deficits in cannabis users (CU). There is evidence that chronic CU might experience sustained deficits in memory function. Findings are mixed regarding impairments in inhibition, impulsivity and decision making for CU, but there is a trend towards worse performance. Three out of four studies found evidence that motor function remains impaired even after a time of abstinence, while no impairments in visual spatial functioning can be concluded. Functional imaging demonstrates clear differences in activation patterns between CU and controls especially in hippocampal, prefrontal and cerebellar areas. Structural differences are found in cortical areas, especially the orbitofrontal region and the hippocampus. Twenty studies (57 %) reported data on outcome effects, leading to an overall effect size of r mean?=?.378 (CI 95 %?=?[.342; .453]). Heavy use is found to be more consistently associated with effects in diverse domains than early age of onset. Questions of causality―in view of scarce longitudinal studies, especially those targeting co-occurring psychiatric disorders―are discussed. 相似文献
187.
Florian Stoeckel 《Political psychology》2016,37(3):431-442
Can social interaction contribute to a sense of community that transcends national borders? This question was initially raised by Deutsch (1953) and revived by Fligstein (2008). My analysis makes two contributions to this literature. First, insights from social psychology are applied to specify the microfoundations for why contact across group boundaries can be related to a collective identity. Second, a new three‐wave panel data set is used to examine the relationship empirically. The sample includes almost 1,500 students at 38 German universities. The results show that social interaction contributes to a European identity, but that it is in particular contact with other international students rather than contact with hosts that fosters it most effectively. The data also reveal that contact has a more profound impact on individuals with a weak European identity to begin with. Finally, the change I find is stable after students return to their home institutions. 相似文献
188.
Uncertainty and Expectation in Sentence Processing: Evidence From Subcategorization Distributions
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There is now considerable evidence that human sentence processing is expectation based: As people read a sentence, they use their statistical experience with their language to generate predictions about upcoming syntactic structure. This study examines how sentence processing is affected by readers' uncertainty about those expectations. In a self‐paced reading study, we use lexical subcategorization distributions to factorially manipulate both the strength of expectations and the uncertainty about them. We compare two types of uncertainty: uncertainty about the verb's complement, reflecting the next prediction step; and uncertainty about the full sentence, reflecting an unbounded number of prediction steps. We find that uncertainty about the full structure, but not about the next step, was a significant predictor of processing difficulty: Greater reduction in uncertainty was correlated with increased reading times (RTs). We additionally replicated previously observed effects of expectation violation (surprisal), orthogonal to the effect of uncertainty. This suggests that both surprisal and uncertainty affect human RTs. We discuss the consequences for theories of sentence comprehension. 相似文献
189.
This study attempted to determine the degree to which measures of health proneness and measures of negative affect represent two distinct, although related, constructs. In addition, it examined the relation between Antonovsky's salutogenic construct of sense of coherence (SOC) and Kobasa's health proneness construct of hardiness. Five health proneness and three negative affect measures were filled out by 164 male patients with coronary heart disease. The pattern of correlations between these measures and confirmatory factor analysis indicated that although the measures of health proneness are negatively related to measures of negative affect, these two sets of measures and the constructs to which they are related can be differentiated from each other. However, SOC was found to be less independent of negative affect than was hardiness. 相似文献
190.
This study used a multidimensional and multilevel approach to study the relation between fear of death and religious commitment. A multidimensional self-report measure of fear of personal death, four TAT cards known to elicit a relatively high frequency of death themes, and an index of Jewish religious commitment were administered to 178 young male Jewish Israelis. Unidimensional and multidimensional analysis of these measures suggested that Jewish religious commitment is related to a heightened specific sensitivity to death at different levels of awareness. 相似文献