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661.
Both filter and resource models of attention suggest an influence of task difficulty on the size of early attention effects. As for temporal orienting, the idea that early effects are modulated by task difficulty has not been tested directly, so far. To fill this empirical gap, the present study used an auditory temporal-orienting task, in which two differently pitched pure tones served as targets. To manipulate perceptual difficulty, the pitch difference between the targets was either small or large. Temporal orienting enhanced the N1 component of the auditory event-related potential. This early, sensory effect tended to be larger in the more difficult condition, particularly over the frontal scalp. Notably, increasing task difficulty affected predominantly the processing of attended stimuli. Hence, temporal orienting may operate by increasing processing resources or gain settings for the attended time point – rather than by withdrawing resources from the unattended time point. 相似文献
662.
Maren Bösel Dipl.-Sozialpädagogin Bärbel Siegfarth Henning Schauenburg Christoph Nikendei Johannes C. Ehrenthal 《Psychotherapeut》2014,59(6):474-479
Social and socioeconomic issues are a risk factor for the development of mental health problems and have the potential to negatively impact the psychotherapeutic treatment process. In addition, mental disorders can also result in socioeconomic stress. Neither professional training nor parameters of everyday practice of medical or psychological psychotherapists are geared towards acquiring sufficient competence to adequately handle complex social problems of highly impaired patients. Especially in times of social crises, three interrelated strategies may be helpful: to enhance psychotherapists’ sensibility and competence to recognize and deal with severe social crises, to promote cooperation with clinical social workers and to incorporate sociotherapeutic elements in the overall treatment planning. Using an approach of integrated care at a university medical department as an example, this article presents examples of how to implement these strategies into everyday therapeutic practice. 相似文献
663.
664.
665.
Davelaar EJ Tian X Weidemann CT Huber DE 《Cognitive, affective & behavioral neuroscience》2011,11(4):608-626
We investigated the basis of change detection in a short-term priming task. In two experiments, participants were asked to
indicate whether or not a target word was the same as a previously presented cue. Data from an experiment measuring magnetoencephalography
failed to find different patterns for “same” and “different” responses, consistent with the claim that both arise from a common
neural source, with response magnitude defining the difference between immediate novelty versus familiarity. In a behavioral
experiment, we tested and confirmed the predictions of a habituation account of these judgments by comparing conditions in
which the target, the cue, or neither was primed by its presentation in the previous trial. As predicted, cue-primed trials
had faster response times, and target-primed trials had slower response times relative to the neither-primed baseline. These
results were obtained irrespective of response repetition and stimulus–response contingencies. The behavioral and brain activity
data support the view that detection of change drives performance in these tasks and that the underlying mechanism is neuronal
habituation. 相似文献
666.
A long lasting debate in the field of implicit learning is whether participants can learn without acquiring conscious knowledge. One crucial problem is that no clear criterion exists allowing to identify participants who possess explicit knowledge. Here, we propose a method to diagnose during a serial reaction time task those participants who acquire conscious knowledge. We first validated this method by using Stroop-like material during training. Then we assessed participants’ knowledge with the Inclusion/Exclusion task (Experiment 1) and the wagering task (Experiment 2). Both experiments confirmed that for participants diagnosed as having acquired conscious knowledge about the underlying sequence the Stroop congruency effect disappeared, whereas for participants not diagnosed as possessing conscious knowledge it only slightly decreased. In addition, both experiments revealed that only participants diagnosed as conscious were able to strategically use their acquired knowledge. Thus, our method allows to reliably distinguish between participants with and without conscious knowledge. 相似文献
667.
Christoph Merkle Martin Weber 《Organizational behavior and human decision processes》2011,116(2):262-271
The better-than-average effect describes the tendency of people to perceive their skills and virtues as being above average. We derive a new experimental paradigm to distinguish between two possible explanations for the effect, namely rational information processing and overconfidence. Experiment participants evaluate their relative position within the population by stating their complete belief distribution. This approach sidesteps recent methodology concerns associated with previous research. We find that people hold beliefs about their abilities in different domains and tasks which are inconsistent with rational information processing. Both on an aggregated and an individual level, they show considerable overplacement. We conclude that overconfidence is not only apparent overconfidence but rather the consequence of a psychological bias. 相似文献
668.
Baldwin SA Murray DM Shadish WR Pals SL Holland JM Abramowitz JS Andersson G Atkins DC Carlbring P Carroll KM Christensen A Eddington KM Ehlers A Feaster DJ Keijsers GP Koch E Kuyken W Lange A Lincoln T Stephens RS Taylor S Trepka C Watson J 《Cognitive behaviour therapy》2011,40(1):15-33
It is essential that outcome research permit clear conclusions to be drawn about the efficacy of interventions. The common practice of nesting therapists within conditions can pose important methodological challenges that affect interpretation, particularly if the study is not powered to account for the nested design. An obstacle to the optimal design of these studies is the lack of data about the intraclass correlation coefficient (ICC), which measures the statistical dependencies introduced by nesting. To begin the development of a public database of ICC estimates, the authors investigated ICCs for a variety outcomes reported in 20 psychotherapy outcome studies. The magnitude of the 495 ICC estimates varied widely across measures and studies. The authors provide recommendations regarding how to select and aggregate ICC estimates for power calculations and show how researchers can use ICC estimates to choose the number of patients and therapists that will optimize power. Attention to these recommendations will strengthen the validity of inferences drawn from psychotherapy studies that nest therapists within conditions. 相似文献
669.
Temporal-cuing studies show faster responding to stimuli at an attended versus unattended time point. Whether the mechanisms involved in this temporal orienting of attention are located early or late in the processing stream has not been answered unequivocally. To address this question, we measured event-related potentials in two versions of an auditory temporal cuing task: Stimuli at the uncued time point either required a response (Experiment 1) or did not (Experiment 2). In both tasks, attention was oriented to the cued time point, but attention could be selectively focused on the cued time point only in Experiment 2. In both experiments, temporal orienting was associated with a late positivity in the timerange of the P3. An early enhancement in the timerange of the auditory N1 was observed only in Experiment 2. Thus, temporal attention improves auditory processing at early sensory levels only when it can be focused selectively. 相似文献
670.
Reward, punishment, and cooperation: a meta-analysis 总被引:1,自引:0,他引:1
How effective are rewards (for cooperation) and punishment (for noncooperation) as tools to promote cooperation in social dilemmas or situations when immediate self-interest and longer term collective interest conflict? What variables can promote the impact of these incentives? Although such questions have been examined, social and behavioral scientists provide different answers. To date, there is no theoretical and/or quantitative review of rewards and punishments as incentives for cooperation in social dilemmas. Using a novel interdependence-theoretic framework, we propose that rewards and punishments should both promote cooperation, and we identify 2 variables—cost of incentives and source of incentives—that are predicted to magnify the effectiveness of these incentives in promoting cooperation.A meta-analysis involving 187 effect sizes revealed that rewards and punishments exhibited a statistically equivalent positive effect on cooperation (d =0.51 and 0.70, respectively). The effectiveness of incentives was stronger when the incentives were costly to administer, compared to free. Centralization of incentives did not moderate the effect size. Punishments were also more effective during iterated dilemmas when participants continued to interact in the same group, compared to both (a) iterated dilemmas with reassignment to a new group after each trial and (b) one-shot dilemmas. We also examine several other potential moderators, such as iterations, partner matching, group size, country, and participant payment. We discuss broad conclusions, consider implications for theory, and suggest directions for future research on rewards and punishment in social dilemmas. 相似文献