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271.
Theories of emotion propose that responses to emotional pictures can occur independently of whether or not people are aware of the picture content. Because evidence from dissociation paradigms is inconclusive, we manipulated picture awareness gradually and studied whether emotional responses varied with degree of awareness. Spider fearful and non-fearful participants viewed pictures of spiders and flowers at four levels of backward masking while electrodermal activity and heart rate were measured continuously. Recognition ratings confirmed that participants' picture awareness decreased with masking. Critically, effects of spider fear on emotion ratings and heart rate also decreased with masking. These findings suggest that effects of spider fear on emotion ratings and heart rate are closely related to picture awareness. 相似文献
272.
The present study investigated modality-specific differences in processing of temporal information in the subsecond range.
For this purpose, participants performed auditory and visual versions of a rhythm perception and three different duration
discrimination tasks to allow for a direct, systematic comparison across both sensory modalities. Our findings clearly indicate
higher temporal sensitivity in the auditory than in the visual domain irrespective of type of timing task. To further evaluate
whether there is evidence for a common modality-independent timing mechanism or for multiple modality-specific mechanisms,
we used structural equation modeling to test three different theoretical models. Neither a single modality-independent timing
mechanism, nor two independent modality-specific timing mechanisms fitted the empirical data. Rather, the data are well described
by a hierarchical model with modality-specific visual and auditory temporal processing at a first level and a modality-independent
processing system at a second level of the hierarchy. 相似文献
273.
Navigation assistance: a trade-off between wayfinding support and configural learning support 总被引:1,自引:0,他引:1
Current GPS-based mobile navigation assistance systems support wayfinding, but they do not support learning about the spatial configuration of an environment. The present study examined effects of visual presentation modes for navigation assistance on wayfinding accuracy, route learning, and configural learning. Participants (high-school students) visited a university campus for the first time and took a predefined assisted tour. In Experiment 1 (n = 84, 42 females), a presentation mode showing wayfinding information from eye-level was contrasted with presentation modes showing wayfinding information included in views that provided comprehensive configural information. In Experiment 2 (n = 48, 24 females), wayfinding information was included in map fragments. A presentation mode which always showed north on top of the device was compared with a mode which rotated according to the orientation of the user. Wayfinding accuracy (deviations from the route), route learning, and configural learning (direction estimates, sketch maps) were assessed. Results indicated a trade-off between wayfinding and configural learning: Presentation modes providing comprehensive configural information supported the acquisition of configural knowledge at the cost of accurate wayfinding. The route presentation mode supported wayfinding at the cost of configural knowledge acquisition. Both presentation modes based on map fragments supported wayfinding. Individual differences in visual-spatial working memory capacity explained a considerable portion of the variance in wayfinding accuracy, route learning, and configural learning. It is concluded that learning about an unknown environment during assisted navigation is based on the integration of spatial information from multiple sources and can be supported by appropriate visualization. 相似文献
274.
Ellenbuerger T Boutin A Blandin Y Shea CH Panzer S 《Quarterly journal of experimental psychology (2006)》2012,65(7):1260-1273
The main purpose of the present experiment was to determine the coordinate system used in the development of movement codes when observational and physical practice are scheduled across practice sessions. The task was to reproduce a 1,300-ms spatial-temporal pattern of elbow flexions and extensions. An intermanual transfer paradigm with a retention test and two effector (contralateral limb) transfer tests was used. The mirror effector transfer test required the same pattern of homologous muscle activation and sequence of limb joint angles as that performed or observed during practice, and the non-mirror effector transfer test required the same spatial pattern movements as that performed or observed. The test results following the first acquisition session replicated the findings of Gruetzmacher, Panzer, Blandin, and Shea (2011) . The results following the second acquisition session indicated a strong advantage for participants who received physical practice in both practice sessions or received observational practice followed by physical practice. This advantage was found on both the retention and the mirror transfer tests compared to the non-mirror transfer test. These results demonstrate that codes based in motor coordinates can be developed relatively quickly and effectively for a simple spatial-temporal movement sequence when participants are provided with physical practice or observation followed by physical practice, but physical practice followed by observational practice or observational practice alone limits the development of codes based in motor coordinates. 相似文献
275.
In the valuation of uncertain prospects, a difference is often observed between selling and buying perspectives. This paper distinguishes between risk (known probabilities) and ambiguity (unknown probabilities) in decisions under uncertainty and shows that the valuation disparity increases under ambiguity compared to risk. It is found that both the comparative versus noncomparative evaluation of risky and ambiguous prospects and the uniqueness of the valuation perspective (either seller or buyer) moderate this increase in the disparity under ambiguity. The finding is consistent with recent theoretical accounts of pricing under uncertainty. We discuss implications for market behaviour and for the ambiguity paradigm as a research tool. 相似文献
276.
Dr. Stefan Suhling Dr. Ulrich Rehder 《Forensische Psychiatrie, Psychologie, Kriminologie》2012,6(1):17-24
The Risk for Recidivism in Sexual Offenders (RRS) procedure is an actuarial risk assessment tool designed to predict recidivism in sexual offenders released from prison. So far it is the only tool developed with a German sample and uses a combination of 11 static and dynamic risk markers. The goal of the current study was to test the predictive validity of the 3 RRS prognostic scores in a sample of 104 sexual offenders whose prison files and recidivism data were analysed after a mean period of 8 years after release from a German prison. The H-score of the RRS developed to assess the probability of reimprisonment showed moderate to good predictive power in relation to any new convictions, new convictions leading to a prison term and new convictions for an aggressive or sexual criminal offence. As expected it was not able to predict sexual recidivism which had a base rate of 8.7% in this sample. The S-score and the K-score of the RRS developed to predict this criterion, performed hardly better in this task. These scores showed moderate to good predictive validity only in the small subsample of extrafamilial sexual offenders. 相似文献
277.
Schlittmeier SJ Weissgerber T Kerber S Fastl H Hellbrück J 《Attention, perception & psychophysics》2012,74(1):194-203
Background sounds, such as narration, music with prominent staccato passages, and office noise impair verbal short-term memory even when these sounds are irrelevant. This irrelevant sound effect (ISE) is evoked by so-called changing-state sounds that are characterized by a distinct temporal structure with varying successive auditory-perceptive tokens. However, because of the absence of an appropriate psychoacoustically based instrumental measure, the disturbing impact of a given speech or nonspeech sound could not be predicted until now, but necessitated behavioral testing. Our database for parametric modeling of the ISE included approximately 40 background sounds (e.g., speech, music, tone sequences, office noise, traffic noise) and corresponding performance data that was collected from 70 behavioral measurements of verbal short-term memory. The hearing sensation fluctuation strength was chosen to model the ISE and describes the percept of fluctuations when listening to slowly modulated sounds (f(mod) < 20?Hz). On the basis of the fluctuation strength of background sounds, the algorithm estimated behavioral performance data in 63 of 70 cases within the interquartile ranges. In particular, all real-world sounds were modeled adequately, whereas the algorithm overestimated the (non-)disturbance impact of synthetic steady-state sounds that were constituted by a repeated vowel or tone. Implications of the algorithm's strengths and prediction errors are discussed. 相似文献
278.
VIREN Swami Jakob Pietschnig ULRICH S. Tran INGO W. Nader Stefan Stieger Martin Voracek 《Applied cognitive psychology》2013,27(1):71-80
Two studies examined the role of informational framing and individual differences on acceptance of the moon landings conspiracy theory (CT). In Study 1, participants were randomly assigned to one of three experimental groups in which they were exposed to different forms of information about the moon landings CT. Results showed that information critical of the moon landings CT resulted in attenuated conspiracist beliefs and that information supportive of the CT resulted in stronger conspiracist beliefs. In addition, stronger belief in the moon landings CT was associated with participants' belief in other CTs and openness to experience. In Study 2, participants completed a survey measuring their belief in the moon landings CT and a range of individual difference factors. Results showed that acceptance of the moon landings CT was associated with the adoption of a conspiracist worldview and schizotypal tendencies. Possibilities for conceptualizing the functional roles played by CTs are discussed. Copyright © 2012 John Wiley & Sons, Ltd. 相似文献
279.
Cognitive behavioral therapy (CBT) can be regarded as an established intervention for the treatment of patients with schizophrenia. Based on randomized clinical trials and meta-analyses, which found evidence for the efficacy of CBT, almost all evidence-based treatment guidelines recommend CBT for routine treatment. This paper demonstrates that in psychoses CBT is a disorder-specific adaptation of general principles of CBT for the treatment of patients suffering from schizophrenia. The CBT procedure draws on cognitive models of symptoms for the identification of treatment targets and focuses on everyday problems of patients by implementing a self-management approach. Fostering motivation and the application of behavioral and cognitive treatment strategies characterize this approach. If the patients live in a family, other family members should be involved in order to improve crisis management and problem solving within the family. A major challenge for the future is to improve the availability of CBT under the German conditions of routine mental health care. 相似文献
280.