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121.
Visual stimuli are often processed more efficiently than accompanying stimuli in another modality. In line with this “visual dominance”, earlier studies on attentional switching showed a clear benefit for visual stimuli in a bimodal visual–auditory modality-switch paradigm that required spatial stimulus localization in the relevant modality. The present study aimed to examine the generality of this visual dominance effect. The modality appropriateness hypothesis proposes that stimuli in different modalities are differentially effectively processed depending on the task dimension, so that processing of visual stimuli is favored in the dimension of space, whereas processing auditory stimuli is favored in the dimension of time. In the present study, we examined this proposition by using a temporal duration judgment in a bimodal visual–auditory switching paradigm. Two experiments demonstrated that crossmodal interference (i.e., temporal stimulus congruence) was larger for visual stimuli than for auditory stimuli, suggesting auditory dominance when performing temporal judgment tasks. However, attention switch costs were larger for the auditory modality than for visual modality, indicating a dissociation of the mechanisms underlying crossmodal competition in stimulus processing and modality-specific biasing of attentional set. 相似文献
122.
Numerous studies showed that the simultaneous execution of multiple actions is associated with performance costs. Here, we demonstrate that when highly automatic responses are involved, performance in single-response conditions can actually be worse than in dual-response conditions. Participants responded to peripheral visual stimuli with an eye movement (saccade), a manual key press, or both. To manipulate saccade automaticity, a central fixation cross either remained present throughout the trial (overlap condition, lower automaticity) or disappeared 200 ms before visual target onset (gap condition, greater automaticity). Crucially, single-response conditions yielded more performance errors than dual-response conditions (i.e., dual-response benefit), especially in gap trials. This was due to difficulties associated with inhibiting saccades when only manual responses were required, suggesting that response inhibition (remaining fixated) can be even more resource-demanding than overt response execution (saccade to peripheral target). 相似文献
123.
Using a cued auditory task-switching variant of dichotic listening, we varied the response–cue interval (RCI) to examine temporal dissipation effects. On each trial, participants were presented with two different number words, one spoken by a female speaker and another by a male speaker (dichotic listening), that served as competing targets for a numerical judgment. The gender of the task-relevant speaker was indicated by a visual task cue prior to each trial. Experiment 1A used two different cues for each task (i.e., gender) and showed only small cue repetition benefits (same cue vs. alternate cue) but large auditory switch costs (alternate cue vs. task switch). A replication without immediate cue repetitions (Experiment 1B) showed very similar switch costs, suggesting that immediate cue repetitions play a negligible role for the size of auditory task switch costs. Moreover, switch costs were reduced when the (entirely task-irrelevant) location of the task-relevant speaker changed, relative to when it was unchanged, suggesting an episodic feature-binding component in our dichotic-listening task. Importantly, both experiments showed no effect of RCI on auditory switch costs. Because statistical power for this null effect was reasonably high across experiments (n?=?50), this finding suggests that auditory attention settings do not dissipate quickly over time. 相似文献
124.
Cornelius J. Koch Martin Kleinmann 《European Journal of Work and Organizational Psychology》2013,22(2):199-217
Time management problems such as choosing urgent instead of important tasks are prevalent but so far they lack a theoretical explanation. The authors argue that time management implies a choice about the use of time. Therefore rational choice theory as a normative theory of choice is relevant to time management, and so is behavioural decision-making research focusing on biases and heuristics that make people deviate from the prediction of rational choice theory. The authors show how these biases and heuristics lead to non-efficient time management. In particular, steep and hyperbolic time discounting is explained and its implications for time management as well as for time management training are presented. Several propositions about the importance of individual and situational variables are also put forward. 相似文献
125.
ObjectivesThe purpose of this study was to examine issues surrounding the provision of sport opportunities to young men from inner-city areas of Edmonton, Alberta, Canada. More specifically, the research question was: What are the benefits, constraints, and opportunities associated with providing sport programs to young men from inner-city areas?DesignEthnography.MethodsData were collected via 15 months of participant observation and interviews with 12 youth workers who were responsible for the provision of various sport programs to young inner-city dwellers. Analysis was framed around personal, social, and structural issues.ResultsAt a personal level sport provided young men with an outlet for overcoming boredom and a temporary reprieve from the conditions of their daily lives. At a social level sport provided opportunities for relationship building between the youth workers and the young men. However, enduring structural constraints associated with economic and social inequality and the lack of a coordinated approach to the delivery of services restricted the influence that sport could have in the lives of the young men.ConclusionThis study provided some precise understandings of the benefits, constraints, and opportunities associated with providing sport programs to members of specific populations in certain inner-city circumstances. Findings, therefore, have the potential to inform public health policy concerning the use of sport-for-development programming in such contexts. 相似文献
126.
Alex S. Koch Joseph P. Forgas Diana Matovic 《European journal of social psychology》2013,43(5):326-334
Can temporary mood influence people's communication strategies? According to Grice's cooperative principle, conversational utterances should ideally conform to the maxims of quantity, relevance, quality, and manner. Three experiments predicted and found that participants in a negative mood complied significantly better with Grice's maxims than did participants in a positive mood when using natural language to describe a previously observed social event. Experiments 2 and 3 further confirmed that mood influenced communication strategies, and not merely the encoding (Exp. 2) and retrieval (Exp. 3) of the relevant information. These findings are consistent with affect–cognition theories predicting that positive affect promotes a more internally focused and assimilative thinking and communication style, and negative mood promotes more externally focused and accommodative thinking, resulting in the closer observance of communication norms. The relevance of these findings for recent affect/cognition theories is considered, and the practical implications of the results for everyday conversational strategies are discussed. Copyright © 2013 John Wiley & Sons, Ltd. 相似文献
127.
Previous research into the mechanisms of task switching has shown that repeating the same response in a different task context is associated with costs. To investigate whether such response-repetition costs occur even when the first of the two responses is not overtly executed, we used a variant of the change-signal paradigm. Subjects responded to a first stimulus by pressing a left or right response key. In half of the trials, a second stimulus occurred after a variable, adaptively adjusted delay, indicating to abandon the first response, and only respond to the second stimulus using another set of left and right response keys. In Experiment 1, different tasks had to be performed with the first and second stimulus (task-switch condition); in Experiment 2, the same task had to be performed with both stimuli (task-repetition condition). Response-repetition costs were obtained in Experiment 1, and response-repetition benefits in Experiment 2. Importantly, these costs and benefits were obtained even when the first of the two responses had not been overtly executed. The data support the idea that interference of task-specific response codes occurs at the level of abstract response codes. Interference of such response codes occurs even when the responses are not overtly executed. 相似文献
128.
The present study examined the effects of cue-based preparation and cue-target modality mapping in crossmodal task switching. In two experiments, we randomly presented lateralized visual and auditory stimuli simultaneously. Subjects were asked to make a left/right judgment for a stimulus in only one of the modalities. Prior to each trial, the relevant stimulus modality was indicated by a visual or auditory cue. The cueing interval was manipulated to examine preparation. In Experiment 1, we used a corresponding mapping of cue-modality and stimulus modality, whereas in Experiment 2 the mapping of cue and stimulus modalities was reversed. We found reduced modality-switch costs with a long cueing interval, showing that attention shifts to stimulus modalities can be prepared, irrespective of cue-target modality mapping. We conclude that perceptual processing in crossmodal switching can be biased in a preparatory way towards task-relevant stimulus modalities. 相似文献
129.
Kjartan Koch Mikalsen 《Res Publica》2010,16(1):23-40
It is common to interpret Kant’s idea of public reason and the Enlightenment motto to ‘think for oneself’ as incompatible
with the view that testimony and judgement of credibility is essential to rational public deliberation. Such interpretations
have led to criticism of contemporary Kantian approaches to deliberative democracy for being intellectualistic, and for not
considering our epistemic dependence on other people adequately. In this article, I argue that such criticism is insufficiently
substantiated, and that Kant’s idea of public reason is neither at odds with deference to a certain kind of authority, nor
with making judgements of character in rational deliberation. This view is corroborated by recent work on Kant’s epistemology
of testimony. 相似文献
130.
Crossmodal selective attention was investigated in a cued task switching paradigm using bimodal visual and auditory stimulation. A cue indicated the imperative modality. Three levels of spatial S–R associations were established following perceptual (location), structural (numerical), and conceptual (verbal) set-level compatibility. In Experiment 1, participants switched attention between the auditory and visual modality either with a spatial-location or spatial-numerical stimulus set. In the spatial-location set, participants performed a localization judgment on left vs. right presented stimuli, whereas the spatial-numerical set required a magnitude judgment about a visually or auditorily presented number word. Single-modality blocks with unimodal stimuli were included as a control condition. In Experiment 2, the spatial-numerical stimulus set was replaced by a spatial-verbal stimulus set using direction words (e.g., “left”). RT data showed modality switch costs, which were asymmetric across modalities in the spatial-numerical and spatial-verbal stimulus set (i.e., larger for auditory than for visual stimuli), and congruency effects, which were asymmetric primarily in the spatial-location stimulus set (i.e., larger for auditory than for visual stimuli). This pattern of effects suggests task-dependent visual dominance. 相似文献